Gleanings of the Week Ending September 21, 2024

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The items below were ‘the cream’ of the articles and websites I found this past week. Click on the light green text to look at the article.

Congaree National Park to Remove Feral Hogs – There were feral hogs in the park when I visited in 2008!

Witness 1.8 billion years of tectonic plates dance across Earth’s surface in a new animation – I watched the video twice…the first just enjoying the overall moves. The second time I watched for how North America moved over time.

What Are the Best Policies for Reducing Carbon Emissions? - A systematic analysis of more than 1,500 climate policies from around the world found that only 63 were successful, reducing average emissions by 19 percent on average. Policies are more effective when implemented with a variety of other policies, instead of alone. In the U.K., banning coal-fired power plants worked when it was combined with tax or price incentives. The same was true for banning combustion engine cars in Norway. The study also found that successful strategies differed between countries—in developed countries, carbon pricing was effective, while regulation was successful in developing countries.

How thyroid hormone fuels the drive to explore - Research in mice sheds light on how thyroid hormone alters wiring in the brain. Findings reveal that thyroid hormone syncs up the brain and body to drive exploratory behavior. Too little thyroid hormone slows down metabolism and can result in symptoms of depression, while too much speeds up metabolism and can lead to symptoms of mania. The receptor for thyroid hormone is expressed by cells throughout the entire brain, including in areas of the cortex responsible for high-level cognition like planning and decision-making.

Cutthroats and Cottonwoods: Protecting the South Fork of the Snake - The South Fork contains the largest cottonwood gallery in the West. In the fall, the leaves on the tall-timbered giants lining the banks bounce in the breeze like gold coins exploding from the pot at rainbow’s end. Native Yellowstone cutthroat trout are in the South Fork. Most of the cutthroats spawn in tributaries contributing to the South Fork but they are found throughout and the farther you float, the bigger they get…. a river that is as it should be. Consistently wild.

Nutrition and healthy aging: The role of protein quality in combatting muscle loss - Aging may reduce our ability to digest, absorb and utilize the nutrients in food. It is important to consider increasing the amount and improving the quality of protein (probably higher than what is currently recommended for the general population) we consume. For example – research showed that consuming higher-quality (whey and pea) protein supplements at breakfast and lunch increased muscle-building in older adults by almost 10 per cent. However, collagen protein — a supplement heavily marketed towards older adults — did nothing to bolster muscle-building in older adults.

Flash Flood Roars Through Frijoles Canyon at Bandelier National Monument – One of my favorite places in New Mexico……hope I can visit again sometime when it isn’t flooded!

Cooler Communities for All - Four key design strategies to reduce urban temperatures:

  • Increase tree percentage in parks and green spaces

  • Provide shade

  • Use plant materials and water instead of hardscape

  • Switch to green ground cover, including grasses and shrubs

This Massive Egyptian Observatory Is Unlocking Celestial Secrets of an Ancient Culture - Archaeologists in Egypt have just uncovered a truly stellar find—a sixth century B.C.E. astronomical observatory in the ancient city of Kafr El-Sheikh. The observatory, made from mud bricks, is the largest and oldest of its kind in the region, spanning nearly 10,000 square feet. It was in ancient Egypt that the 365-day calendar was born, and the 24-hour day. They completely mapped the night sky, and had their own constellations and zodiac, some signs of which are still recognized today.

Looting of the Sudan National Museum – more is at stake than priceless ancient treasures - It was founded in 1959, ahead of the construction of the Aswan High Dam. A Unesco-led salvage campaign was launched in 1960 to protect and preserve the ancient monuments that would be flooded by the dam, which would alter the landscape of the Nubian region. The reported loss of parts of this collection represents a profound and multi-layered tragedy for future generations.

Lovett Pinetum

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The Identifying Woody Plants class I am taking made a field trip to Lovett Pinetum last week. It was about 30 minutes in traffic getting there and 30 minutes back. 8 more woody plants were added to our list to recognize in the field…plus we saw some plants not required but interesting…and walked around a new-to-me place. I took my camera along.

Here are some of the plants I photographed at Lovett Pinetum. I share the scientific name and family for those that are added to the list of plants we are to recognize for the class…only the common names for those that were easily visible and pointed out to us in passing at the Pinetum.

Eastern wahoo…with lots of aphids on the stems.

Poison ivy - Toxicodendron radicans – Anacardiaceae: “leaves of three,” leaves are oval, but margins vary considerably

Black walnut – Juglans niger – Juglandaceae: with chambered pith. This is a tree I was very familiar with from Maryland…nuts on the ground in the fall are always very noticeable!

Joint fir (Ephedra): not native to Missouri but an interesting plant.

True cedar – Cedrus – Pinaceae: needles on short shoots, evergreen, cones upright, does not grow very well in Missouri.

Ozark witch hazel – Hamamelis vernalis – Hamamelidaceae: Woody seed capsule from flowering last January still not open; hairy twigs; shrub; leaves already changing. Flowers, when they appear, will have ribbon-like petals

American hazel – Corylus americana – Betulaceae – nuts will turn brown as they ripen; shrub; leaves wide oval and doubly serrate

Longleaf pines – Along Atlantic coast and Florida; white bud at ends of branches

Jewelweed (not a woody plant) was blooming in several places…particularly around the spring area.

There was large black oak that was pointed out on our trek back to the vans…but oaks must be for another class since it wasn’t added to our ‘must know’ list this time.

While we were at the Pinetum, we noted two animals: a black rat snake parallel to our trail (very sluggish, might have just eaten since it didn’t move while we watched) and a deer that watched us from across an open area then took off when we got a little closer.

It was a good field trip for identification of trees, vines, and shrubs!

Previous posts about my experiences in the Identifying Woody Plants class at Missouri State University

Springfield Botanical Gardens Field Trip

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The field class I am taking at Missouri State University made a trip to the Springfield Botanical Gardens in late August – on a sunny day when the temperature was in the high 90s and the humidity was high too. We tried to stop in shady spots and didn’t walk all that far. There were no misshapes but everyone was glad that the field trip did not last as long as it could have.

I opted to wear my photovest so that I could put my water bottle in the back pocket; my field notebook and pencil was in the front pocket and I had my small point and shoot (Canon Powershot SX730 HS) on my sling strap. It worked well to write notes and take pictures. The point and shoot worked better for me than my phone which I used in the previous class during a field walk around the campus because the camera is easier to hold steady and has better optics for zooming into the parts of trees.

Here are some of the trees we stopped to talk about:

Norway Spruce - Picea abies – Pinaceae: with its large cones that have visible resin and dangling branches

Eastern Hemlock – Tsuga canadensis – Pinaceae: with green and brown cones and flat needles

American Elm – Ulmus americana – Ulmaceae: with its doubly serrated leaves and vase shape

Blue Spruce – Picea pungens – Pinaceae: with its glaucus needles, papery cones, and pegs where needles used to be

Flowering Dogwood – Cornus florida – Cornaceae: with its bark like alligator skin and red drupes

There was an old Bradford Pear which we stopped to look at…and talk about the invasive aspect of this tree that was highly recommended for planting not that long ago. (Bradford/Callery Pear – Pyrus calleryana – Rosaceae)

Yellow/Tulip poplar – Liriodendron tulipfera – Magnoliaceae: with braided bark…I didn’t take a picture since this a very familiar tree for me!

Silver Maple – Acer saccharinum – Sapindaceae: with heavily indented 5-lobed leaves with the silver underside

I couldn’t resist taking at least one flower picture while we were at the garden!

Gleanings of the Week Ending August 31, 2024

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The items below were ‘the cream’ of the articles and websites I found this past week. Click on the light green text to look at the article.

A 13,600-year-old mastodon skull is unearthed in an Iowa creek - Researchers will now scrutinize the bones to look for “any evidence of human activity, such as cut marks.”

Wildlife Photographer Captures Intimate Photos of Alaska’s Grizzly Bears – The bears of Lake Clark National Park. Wildlife photographers from around the world started coming to the Kenai Peninsula in Lake Clark National Park around 15 years ago, but they can’t get up close to the bears without a trained guide close by.

Solar Energy Revolution Brewing In Arkansas, With An Assist From GM - As of Q1 2024, Arkansas ranked #27 on the state-by-state rankings of installed solar capacity tracked by the Solar Energy Industries Association. One area that has seen some healthy activity is rooftop solar and other small-scale projects. According to the figures kept by SEIA, a single utility-scale solar project in Chicot County accounted for an outsized share of the 1,122 megawatts of installed capacity (140 megawatts). Last week GM announced that it has entered a PPA for electricity from the largest ever solar energy project in Arkansas so far, the Newport Solar project. Located in the town of Newport, the 180-megawatt project comes under the umbrella of the firm NorthStar Clean Energy, a branch of CMS Energy.

Say 'aah' and get a diagnosis on the spot: is this the future of health? - Analyzing the color of the human tongue. The proposed imaging system can diagnose diabetes, stroke, anemia, asthma, liver and gallbladder conditions, COVID-19, and a range of vascular and gastrointestinal issues.

The weird way the Los Angeles basin alters earthquakes - The enormous five-mile-deep (8km), sediment-filled basin that LA is built upon plays a surprising role in the effects felt above ground. Imagine the Los Angeles basin as a giant bowl of jelly – the dense rocky mountains and underlying rock make up the bowl, while the sediment fill is represented by the gelatinous mixture. If you shake the bottom [of the bowl] a little bit, the top flops back and forth quite a bit. And atop this quivering mass of jelly is the megacity of Los Angeles. Other cities built on basins: Seattle, Portland, Salt Lake City, Mexico City, and Tehran.

Rethinking the dodo - The Dodo was the first living thing that was recorded as being present and then disappeared. Researchers went through all the literature on the Dodo encompassing hundreds of accounts dating back to 1598 and visited specimens around the UK, including the world's only surviving soft tissue from the Dodo, in the Oxford Museum. They confirm that the bird was a member of the columbid (pigeon and dove) family. Contrary to previous assumptions about its demise, it was almost certainly a very active and fast animal.

Elite Woman’s Grave Found in an Abandoned Fortress in Mongolia - The fortress of Khar Nuur was part of a system of walls and fortresses that spanned nearly 2,500 miles. Radiocarbon dating of the burial indicates that it dates to between A.D. 1158 and 1214, after the fortress had been abandoned, and likely between the fall of the Khitan or Liao Empire in A.D. 1125 and the rise of the Mongolian Empire in A.D. 1206. The researchers explained that the burial is one of only 25 graves dated to this period that have been found in Mongolia. The woman was between the ages of 40 and 60 at the time of death, and she was dressed in a yellow silk robe and headdress made of materials likely imported from China. Her coffin, made of non-local wood, also contained gold earrings, a silver cup, a bronze vessel, a gold bracelet, and coral and glass beads.

The banana apocalypse is near, but biologists might have found a key to their survival - Today, the most popular type of commercially available banana is the Cavendish variety, which was bred as a disease-resistant response to the Gros Michel banana extinction in the 1950s from Fusarium wilt of banana (FWB). For about 40 years, the Cavendish banana thrived across the globe in the vast monocultured plantations that supply the majority of the world's commercial banana crop. In the 1990s, a new strain of the Fusarium fungus started causing problems….and the research race was on to save bananas.

Florida is building the world's largest environmental restoration project - In February 2023, a large digger broke ground on a multi-billion-dollar project that has been decades in the making: building a reservoir the size of Manhattan Island. The reservoir, which is part of an historic restoration of the Everglades ecosystem, is intended to help bring a secure, long-term supply of clean drinking water to Florida's residents. The whole project is due to be completed in 2029.

Streetlights Helping Trees Defend Against Insects - Streetlights left on all night cause leaves to become so tough that insects cannot eat them, threatening the food chain. Decreased herbivory can lead to trophic cascading effects in ecology. Lower levels of herbivory imply lower abundances of herbivorous insects, which could in turn result in lower abundances of predatory insects, insect-eating birds, and so on.

A College Class…after 40 Years

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Going to a college campus for a class was almost a ‘new’ experience since I hadn’t done it for over 40 years.

The campus was newer and bigger than the university I attended in the 1970s. There was more construction and different types of parking that I’d experienced before. I set my nav system for a parking lot close to the building where my class was located; it took me to the parking lot but not on the side that had an entrance! I used the nav system to help me find the building to…and still walked past it because I wasn’t looking for the name of the building in the right place. As I walked in the building, the doors leading to the first floor were taped saying there was construction on that floor…realizing that my class was supposed to be on the third floor; I took the door to the stairs that were off the lobby between the outside doors and the doors to first floor. I stopped at a lady’s room then found the classroom…both similar to 40 years ago.

The class I am taking is a field class about woody plants so there is a short lecture segment at the beginning and then the rest of the session is outside either around the campus or on field trips at various locations around Springfield MO. The professor had posted the charts for the first class and the syllabus for the course on Brightspace earlier in the week; I had looked at the charts and printed the schedule page of the syllabus…brought a notebook for recording notes in the field.

It turned out that the professor had printed copies of the syllabus and worksheets for when we were out in the field (around campus). The amount of paper was reminiscent of my long-ago college days. My earlier idea of using my phone to take pictures and notes in the field was not looking as realistic.

I did try to take some pictures of the woody plants that were part of the first class but the only ‘good enough’ picture were from black gum (Nyssa sylvatica) (1 picture) and buckeye (Aesculus) (2 pictures).

Juggling the cell phone on a lanyard and taking physical notes is cumbersome. I’m going to try a slightly different approach for the next class which will be a field trip to Springfield Botanical Gardens….maybe taking my bridge camera (better optics so I don’t need to get as close to what I am photographing) and wearing my photovest (with lots of pockets in the front) so the notebook can be taken in and out more easily.

I am not taking the class for credit, but I am still trying to learn the common and scientific names for the woody plants viewed in the course. It might take some study techniques I’ve not used for a very long time. I want to find techniques that do not involve making paper flashcards!

Registering for a College Class

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I registered for a class at Missouri State University last week – Identification of Woody Plants. It has been over 40 years since I did this last! Lots has changed in those years.

  • I didn’t need to go through an admissions process ahead of time or get transcripts sent because I am part of the cohort of people over 62 years old that can attend classes at much reduced cost (MSU 62). I called their office a week before the registration day to confirm. I also asked about the pre-req for the class I wanted to take; I had the pre-req in my long-ago college experience but without the transcript, how would they know? I was advised to email the instructor to get a waiver…which I did and they waived the pre-req for me.

  • The course catalog and schedule are all online now rather in paper/soft cover books. I knew that there were only 7 slots remaining in the course I wanted to take before I headed to registration.

  • The registration for the MSU 62 cohort was held the week before classes started which is later than I usually registered back in the 70s. I arrived just after they opened. The receptionist for the event handed me forms and sent me to tables/chairs to fill them out. The course I wanted to take was not on the paper version of a course list on the tables, so I was glad I had the numbers for it written down to enter in the appropriate places on the form. I also had the printed version of the email exchange with the instructor. I was so focused on the requirements for my degree 40 years ago…now I am just taking whatever interests me and not for credit.

  • When I finished the forms, I joined the queue in chairs waiting for advisors…and thoroughly enjoyed a donut while I waited. I don’t remember ever having food provided when I registered for college classes before!

  • The advisor got me admitted and registered very quickly. She discovered that I already had a number with the university (maybe because I had donated back in 2020).

  • After that I was routed to a second person that printed out my concise schedule and talked to me about setting up my computer accounts, books and parking permits. It appears that the only cost is going to be for the parking pass – quite a bargain even compared to the costs I had in the 1970s. In addition, the textbook for the class I am taking is listed as ‘optional’ so I am waiting to buy it until after I hear what the instructor says in the first session.

Less than an hour after I entered the building, I was walking back to the parking garage. Along the way I photographed the colorful school mascot (bear) at the corner of the building. I am looking forward to this course…not so different from the way I always looked forward to the fall during my education-intense years…but savoring that I won’t be taking any tests!

Our Missouri Neighborhood – July 2024

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There is always something to see in walks around the ponds in our neighborhood…bits of nature thriving even in an area dominated my manicured yards: a dandelion puff (hurray for some deep rooted plants in the turf), a fat robin (there must be plenty of worms here), clover in bloom (making nitrogen available to other plants), and magnolia flowers (the bee had just flown away).

There are always turtles in the pond. One on the bank looked like he was waving at me!

I stop at the bridge to look at the sheet of water flowing into the first pond – runoff from rain or sprinkler systems running too long. I look for ripples and collections of debris to photograph. The feather caught my attention first….then the leaves and green clippings…a background of algae.

The large redbud near the pond was damaged by a storm a year ago. There is new growth from the large branch that had to be removed. I like the way the new leaves start out reddish…turn a light green…they will get even deeper green as they age.

Most of the fish I see in the ponds are small and gray or brown…but there is at least one monster koi (about 2 feet). Hopefully if someone catches it, they will not return it to the pond!

Finally – a fresh feather on the path that had been sprinkled by a neighbor’s automatic sprinkler system!

Gleanings of the Week Ending June 22, 2024

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The items below were ‘the cream’ of the articles and websites I found this past week. Click on the light green text to look at the article.

Life in a heat dome: The American West is figuring out how to keep cool – Summer in US cities…strategies to mitigate the hotter temperatures caused by climate change.

Statins for heart disease prevention could be recommended for far fewer Americans if new risk equation is adopted – Not a lot of details in this article although I have suspected for some time that statins were being over-prescribed.

10 States Where the Gas Tax Is Highest – This post prompted me to compare gas taxes in the states I drive through to on my frequent road trips to Dallas (Missouri, Oklahoma, and Texas)…and the decision to always buy the tank of gas required in each direction in Oklahoma!

Creating a throw-away culture: How companies ingrained plastics in modern life – Aargh! Despite growing public pressure, companies increased their use of new plastic by 11% between 2018 and 2022!

What happens when you take too much caffeine - When we consume caffeine, it's quickly absorbed into our bloodstream, where it out-competes adenosine by preventing it from connecting to these receptors and doing its job to make us feel tired. This is why consuming caffeine can make us feel more awake and alert. Caffeine can also boost levels of other neurotransmitters like dopamine and adrenaline, which can make you feel more stimulated. Research has associated caffeine consumption with up to a 60% reduced risk of developing Alzheimer's. One explanation for this is that caffeine improves blood flow to the brain. While caffeine enters the gut quite quickly, its effects can take hours to wear off. Scientists recommend having your last 'dose' of caffeine eight hours and 48 minutes before you go to bed.

Why do 1 in 10 Americans get eczema? Is it too much salt? - Eczema, also known as atopic dermatitis, is a chronic disease that causes dry, itchy skin. It's one of the most common skin conditions, affecting more than 31 million people in the U.S., and one in 10 people will develop it at some point. It has become increasingly common in recent years, especially in industrialized countries, implicating environmental and lifestyle factors like diet.

A fierce battle is being fought in the soil beneath our feet – and the implications for global warming are huge - In some parts of the world, increased CO₂ means tiny bugs in the soil “hold onto” their phosphorus, making less available for trees.

Rock Art Found in This Saudi Arabian Cave Offers ‘Rare Glimpse’ Into Ancient Human Life – Sheep, ibex, and goats on the walls of a lava tube.

Depressive symptoms may hasten memory decline in older people – 16 years of data from 8,268 adults with an average age of 64. This study shows that the relationship between depression and poor memory cuts both ways, with depressive symptoms preceding memory decline and memory decline linked to subsequent depressive symptoms. So – interventions to reduce depressive symptoms might slow memory decline.

D-Day shipwrecks were a WW2 time capsule – now they are home to rich ocean-floor life – 80-year-old wrecks that line the coasts of Britain and France…reclaimed by sea life.

Eureka Springs & Northern Arkansas Railway

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My husband, daughter, and I took a two-day trip to Eureka Springs, Arkansas just before Memorial Day. It’s less than a 2-hour drive from our home in Missouri. The nav system took us on a scenic route…curvy 2 lane highway all the way, with frequent road cuts that were generally well back from the shoulder (I wondered if students on geology field trips use them to see the underlying rock of the area), and over a narrow part of Table Rock Lake.

We arrived a little early and drove through the town. I remembered the main street from more than 50 years ago; the streets that turn off are very steep and narrow up the side of the valley. The place is a driving adventure! We parked in the Eureka Springs & Northern Arkansas Railway just after the terminal opened; we had reservations for the morning excursion train. It was a cloudy morning and had rained recently; the first photographic opportunity of the morning turned out to be butterflies in the gravel parking lot! The mourning cloak on the curb was not moving but all the others took some patience to photograph.

There was collection of old rail cars and engines. I was interested in a tractor that must have been quite a change on farms where horses or oxen had previously done the heavy pulling.

The car and engine that took us on our excursion was waiting for us. They had a ramp mechanism that enabled wheelchair access to the car, but we could also get into the car using stairs.

The train follows a stream, and I managed a few pictures while we were in motion. I saw a pawpaw tree with fruit beginning to grow (but didn’t get a picture); pawpaw is the food plant of the zebra swallowtail butterfly (like I photographed in the parking lot for the train).

The route is only 4.5 miles up and back (and takes about an hour). At the halfway point, we got out and I took some track and vegetation pictures.

The conductor gave us a tutorial about putting pennies on the track as an optional activity for this excursion. My daughter had told us ahead of time (she had done the excursion last fall) so we came prepared. I gave a penny to a man that didn’t have any change with him. We all stood away from the tracks and the train rolled over our pennies – waiting to retrieve our pennies from the track until the conductor got the word from the engineer that it was safe to do so.

Below is a picture of a penny and a train-flattened penny. I am thinking about putting some earring posts on two of the flattened pennies….wearing them as earrings!

It sprinkled a little while we were on the train but had cleared by the time we returned to the station. The train was an excellent start to our Eureka Springs adventure.

Gleanings of the Week Ending April 6, 2024

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The items below were ‘the cream’ of the articles and websites I found this past week. Click on the light green text to look at the article.

What do terracotta warriors tell us about life in ancient China? – Discovered 50 years ago…they are a snapshot of the soldiers of Qin – the feudal state that unified China, for the first time in 221BC under the country's first emperor Qin Shi Huang – from the soles of their shoes to their candy-colored clothes to the bronze weapons buried with them to their distinct facial features. 2,000 terracotta warriors have been excavated but more are uncovered every year.

This Map Shows Where Planting Trees Would Make Climate Change Worse - Trees draw down carbon dioxide from the atmosphere, helping to keep warming in check. But their dark, green leaves also absorb heat from sunlight. Snow and sand, by virtue of their light color, reflect more sunlight back into space. As such, trees planted in snowy areas or in the desert will absorb more sunlight than their surroundings, which may negate the climate benefits of soaking up carbon dioxide.

These 3,000-Year-Old Treasures Were Forged from Meteoritic Iron - In the 1960s, researchers discovered a trove of Bronze Age treasure in Villena, Spain. New research has revealed that some of them made between 1400 and 1200 B.C.E. were forged from iron from a meteor that struck Earth a million years ago. Who manufactured them and where this material was obtained are still questions that remain to be answered.

Vernal Pools Make Your Garden Sing - It’s not just frogs that are making homes in these little pools of water. Less vocal species like salamanders, dragonflies, fairy shrimp, and even dozens of native plants are there too. Even more species than that can be found simply visiting the pool for a drink or snack, including great blue herons, wood ducks, and box turtles.

Return of Trees to Eastern U.S. Kept Region Cool as Planet Warmed - Over the 20th century, the U.S. warmed by 1.2 degrees F (0.7 degrees C), but across much the East, temperatures dropped by 0.5 degrees F (0.3 degrees C). A new study posits that the restoration of lost forest countered warming, keeping the region cool. Still, the return of trees can only partially account for the drop in temperature. Other possible explanations include the growth of irrigation, a source of water vapor, and the uptick in particulate pollution, which reflects sunlight, thereby cooling the air.

Sweetened drinks linked to atrial fibrillation risk - 20% higher risk of irregular heart rhythm, known as atrial fibrillation, among people who said they drank two liters or more per week (about 67 ounces) of artificially sweetened drinks. The risk was 10% higher among people who said they drank similar amounts of sugar-sweetened beverages.

Measles outbreaks and what parents need to know - Measles can lead to complications such as ear infections, diarrhea, pneumonia, and encephalitis (brain swelling). One to three of every 1,000 children infected with measles dies. More than 97 percent of the people who have had their two shots of the vaccine never get measles.

A new world of 2D material is opening up - 2D materials have shown great potential for an enormous number of applications. You can imagine capturing carbon dioxide or purifying water, for example. Now it's about scaling up the synthesis and doing it in a sustainable way.

In Cleveland, mushrooms digest entire houses: How fungi can be used to clean up pollution - Fungi can eat the noxious waste from abandoned homes. Heavy metals and other toxins are extracted and captured in the mushrooms that grow, while the substrate leftovers, including the mycelium, are compacted and heated to create clean bricks for new construction. The resulting "mycoblocks" have a consistency akin to hardwood and, depending on the specifics of the manufacturing process, have been shown to be significantly stronger than concrete.

Arctic nightlife: Seabird colony bursts with sound at night - Acoustic recordings of a colony of little auks reveal their nocturnal activities and offer valuable monitoring means for avian biology in the Arctic.

Gleanings of the Week Ending March 30, 2024

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The items below were ‘the cream’ of the articles and websites I found this past week. Click on the light green text to look at the article.

Floating Solar Array Is Designed to Take the Rough Stuff - Rich opportunities for solar co-location with offshore wind. By combining floating solar with offshore wind farms and thereby leveraging the same energy infrastructure and export cables, the resulting energy production capacity per used area could be drastically improved. Prototype has been developed…should be in the water by June 2024.

Lessons In Rewilding the Scottish Highlands – Working with nature…increasing biodiversity…reducing monoculture.

Five Shocking Animal Hybrids That Truly Exist in Nature, From Narlugas to Grolar Bears to Coywolves – I’ve heard about a few of these…the pictures were interesting.

Pregnancy advances your ‘biological’ age — but giving birth turns it back - Brewing a baby leads to changes in the distribution of certain chemical markers on a pregnant person’s DNA — changes similar to those that are a hallmark of getting older. But new research shows that, several months after a person gives birth, the chemical patterns revert to an earlier state.

Did You Know Sandhill Cranes Dye Their Feathers? – The birds rub iron rich mud onto their feathers…staining them. And some trivia about sandhill cranes at the Platte River (Nebraska) in the early spring:

  • The birds find a lot of waste corn in farm fields, as well as small invertebrates in marshes near the river. A crane can add 20 percent to its weight during two or three weeks in the area.

  • At night, the cranes move to the Platte River for safe roosting in the shallow water.

  • Sandhill cranes are the most numerous of the world’s crane species.

  • In the Central Flyway, more than 500,000 cranes – more than 80 percent of their population.

The heat index -- how hot it really feels -- is rising faster than temperature - Researchers looked at Texas's summer 2023 heat wave and found that the 3 degree F rise in global temperatures has increased the state's heat index as much as 11 degrees F on the hottest days! Arizona's most populous county, covering most of Phoenix, reported that heat-associated deaths last year were 50% higher than in 2022, rising from 425 in 2022 to 645 in 2023. Two-thirds of Maricopa County's heat-related deaths in 2023 were of people 50 years or older, and 71% occurred on days when the National Weather Service had issued an excessive heat warning. With climate change, the relative humidity remains about constant as the temperature increases, which reduces the effectiveness of sweating to cool the body.

158 Cherry Blossom Trees Will Be Cut Down in D.C. in Effort to Withstand Sea-Level Rise – Part of the project to reconstruct a seawall around the Tidal Basin.

Landscape Architecture Strategies Reduce Impacts of Dangerous Extreme Heat – And these apply to what we do in our yard too!

  • Increase tree percentage in parks and green spaces

  • Provide shade on sites

  • Use plant materials and water instead of hardscape

  • Switch to green ground cover, including grasses and shrubs

Plastics Contain Thousands More Chemicals Than Thought, and Most Are Unregulated – Scary! The report also highlights 15 chemical priority groups of concern. These include phthalates, which are used to make plastics more durable and have been found to affect the reproductive systems of animals, as well as per- and polyfluoroalkyl substances (PFAS), which break down very slowly over time and have been linked to health issues including reproductive and developmental problems and increased cancer risk.

Only seven nations meet WHO air pollution standards – The US is not one of the seven: Australia, Estonia, Finland, Grenada, Iceland, Mauritius and New Zealand. Bangladesh, Pakistan, India, Tajikistan and Burkina Faso were the top five most polluted countries in 2023 with PM2.5 levels nine to 15 times higher than the WHO's standard. Columbus, Ohio, was the most polluted major city in the United States, while Las Vegas was the cleanest and Beloit, Wisconsin polluted U.S. city overall.

Gleanings of the Week Ending March 16, 2024

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The items below were ‘the cream’ of the articles and websites I found this past week. Click on the light green text to look at the article.

Heat Pumps Are Still a Good Investment Even If Your Grid Is Powered By Coal - If every American home with gas, oil, or inefficient electric resistance heating swap those things out for heat pumps, the emissions of the entire U.S. economy would shrink by 5% to 9%. That’s how powerful a decarbonizing tool heat pumps are.

Asian Elephants Bury Their Dead - In India, five dead elephant calves were found buried on their backs in irrigation ditches, with evidence that multiple herd members had participated in the burials. Are there more examples? It doesn’t seem likely that elephants would be able to move an adult elephant like they did the calves. Do they do something else with the carcass rather than burial?

COVID-19 virus can stay in the body more than a year after infection – So – if it persists in blood, should these people not be donating blood? Does this mean that people could get COVID from a blood transfusion?

Archeoastronomy uses the rare times and places of previous total solar eclipses to help us measure history – What we learn from historical eclipses….a timely history lesson with the 4/8 total eclipse that will be visible from much of the US coming soon.

An Eruption for Galápagos Iguanas – The La Cumbre volcano is erupting in the Galapagos. Some satellite views from NASA including a description of the instrumentation available to monitor this eruption.

An obsessed insect hunter: The creepy-crawly origins of daylight savings – We did it again last weekend…changed to daylight savings time. I wish we could stop (don’t care whether we stay permanently on standard or daylight savings…just that we don’t change) but we don’t seem to be able to stop. This post is about George Hudson…and his desire for more daylight after work to study insects! I’ll browse some of his books on Internet Archive.

Solar Accounted for More Than Half of New Power Installed in U.S. Last Year - Solar accounted for most of the capacity the nation added to its electric grids last year. That feat marks the first time since World War II, when hydropower was booming, that a renewable power source has comprised more than half of the nation’s energy additions. Texas and California led a solar surge driven mostly by utility-scale installations, which jumped 77 percent year-over-year to 22.5 gigawatts. The residential and commercial sectors also reached new milestones. The biggest open question is how quickly projects can connect to the grid.

An inside look at Beech tree disease – A fast spreading disease….killing another tree species. It hasn’t been that long ago that Emerald Ash Borer wiped out the ash trees. We were just noticing sickly beeches in Maryland before we moved…realizing that the forests would be profoundly changed without beech trees.

Professional Photographer Shares How to Photograph the Great North American Solar Eclipse Safely – Time to start preparing for 4/8/2024!

America’s Sinking East Coast – There are multiple reasons that areas are sinking faster than melting ice and thermal expansion from climate change would cause.

Gleanings of the Week Ending March 9, 2024

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The items below were ‘the cream’ of the articles and websites I found this past week. Click on the light green text to look at the article.

The benefits of trees – From an architect’s perspective…working with trees rather than just around them.

How the color orange got its name – Orange was my mother’s favorite color for many years. She had the door of the house they built painted orange! So - this post caught my attention. In English, before the turn of the 16th century, orange objects would be simply known as “yellow-red” or “geoluhread” in Middle English. There are also records of the word “saffron” being used to as a replacement for “orange” as a descriptor. Oranges, the fruit, take their name from the Sanskrit nāraṅga meaning orange tree. Nāraṅga morphed via the Persian word nâranj and the French pomme d’orenge, meaning “apple of the orange tree.”

Quality time with Pocket Gophers - Pocket gophers spend most of their lives underground. There are some 38 species found across a wide swath of central and North America. In many areas, they’re abundant. And yet, many people have never seen one.

Scientists shocked to discover new species of green anaconda, the world’s biggest snake - Green anacondas are the world’s heaviest snakes, and among the longest. Predominantly found in rivers and wetlands in South America, they are renowned for their lightning speed and ability to asphyxiate huge prey then swallow them whole. New research upends scientific understanding of this magnificent creature, revealing it is actually two genetically different species. The snakes are well-adapted to a life lived mostly in water. Their nostrils and eyes are on top of their head, so they can see and breathe while the rest of their body is submerged. Anacondas are olive-colored with large black spots, enabling them to blend in with their surroundings. The two species of green anaconda look almost identical, and no obvious geographical barrier exists to separate them. But their level of genetic divergence – 5.5% – is staggering. By comparison, the genetic difference between humans and apes is about 2%.

Helping caregivers help people with dementia eat at home - Over 80% of people with dementia in the United States live at home. An estimated 60% of home-based patients aren't able to routinely eat or prepare food on their own. Professionals recommended:

  • Lowering auditory and visual distractions.

  • Eliminating household clutter, clearing pathways and improving lighting.

  • Providing written instructions to guide patients' mealtime activities.

Untraceable ingredients and unrecycled packaging: Why sustainable skincare is so hard to find - Short of a chemistry degree, understanding how to make sustainable skincare choices is no easy task for consumers.

Escaping Home – One of the last birding field trips we did before moving from Maryland was along the Harriet Tubman Byway. The post includes an image of the area from NASA’s Landsat 9 and historical background.

Peek Inside the Ancient Egyptian Tomb of Neferhotep, Now Open to the Public - Revitalizing ancient artifacts is no easy lift. All the wall paintings, reliefs, and sculptures required stabilizing loose stone fragments, cracks, detached plaster, and paint layers, not to mention cleaning and preserving surfaces damaged by fire and time. The restoration project started in 2000.

Discovering Mammoth Cave’s Oceanic Past - Creatures that lived in an ancient seaway that covered the landscape known today as Kentucky some 325 million years ago: crinoids, horn coral, brachiopods…small dark slashes that indicate shark teeth…a dorsal fin spine…a large piece of shoulder skeletal cartilage.

Saguaro Arms and Other Cactus Musings in Tucson – Remembering Saguaro National Park from my daughter’s graduate school years in Tucson. The research about the arms is interesting: The working theory is that saguaros start their branching at a certain size, not a certain age. Initial data indicates that saguaros tend to grow their first arm facing the south or southeast, often when they’re around 11-feet tall. Second arms often grow facing north. Arms seem to grow in a way that maintains symmetry and allows the saguaro to keep its balance.

Last Sunrise of 2023

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I was in my parents’ house alone on the last day of 2023. They had already moved to assisted living (more on that in the monthly ‘ramping up elder care’ post coming soon) and the first round of distribution of the furniture had occurred: to their new home, to the rest of the family. It felt odd to be there without them and without the jumble of possessions that had been there for over 30 years. The beauty of the sunrise changed the trajectory of my mood for the better!

I loved the color caught in the line of trees visible from the backyard. I took several zoomed images. I think the last one is my favorite.

It occurred to me that the prettiest sunrises are not the ones the occur on a clear morning…it takes some clouds to catch/reflect the light. Maybe that is a good analogy for life too – that complexity and challenge make life better!

Texas Sky

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The back of my parents’ house faces south. I’ve taken a few minutes to photograph the sky several times recently. I appreciate the trees close enough to make interesting horizons for sunrise and sunset pictures…sparse enough to show plenty of color.

The sunset was one that happened early in the month. My parents and watched it from the garden room…and I stepped outside to take a picture.

The next two were taken just after 8:30 in the morning….after a lot of the morning flights had taken off and the moon was still up.

I photographed a sunrise too. I used to try to hide the power lines but opted to feature them inn this image. There are still leaves on some of the trees (silhouettes); fall chores happen in December in this part of Texas!

Fall Foliage in Carrollton

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The peak fall color in my parents Carrollton yard was in December this year….and seemed more vibrant than usual. The crape myrtle leaves turned red and stayed attached long enough to be noticed.

The pecan turned stayed green for a longer…then turned yellow. It sheds small branches of leaves rather than single leaves. I caught one small branch in the process of turning…the sun bringing out more colors than I had noticed previously.

The mulberry leaves turn yellow. They dominate in the collection of leaves that must be mowed/mulched into the yard.

The red oak in the front yard is indeed very red when the sun shines through the leaves.

Even the neighbor’s wisteria that is coming over the fence contributed fall color.

After last summer’s drought and high temperatures in this area, the trees have apparently recovered sufficiently to provide a magnificent fall display…before settling into winter.

Gleanings of the Week Ending November 11, 2023

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The items below were ‘the cream’ of the articles and websites I found this past week. Click on the light green text to look at the article.

In search of the Old Ones: Where to find the world's longest-lived trees – 25-30 woody plants can, without human assistance, produce specimens that reach the age of 1,000 years or older. Of those, only about 10 can reach 2,000 years and those are all conifers. 3 can produce trimillenials and 1 can produce quadrilmillenials. The longest-lived trees of eastern North America, bald cypress, grow in swamps and blackwater rivers. The eldest occur in backwater sections of North Carolina's Black River, just miles from industrial hog farms and fields cleared long ago for tobacco….these bald cypresses reach ages of 2,600+ years. Conifers achieve maximum longevity when conditions are cold and dry, or hot and dry, or steep and exposed, or high altitude, or nutrient poor. In the case of Great Basin bristlecone pine, the longest-living plant on the planet, it is all of the above, with some of these plants reaching up to 4,900 years old.

Conservation of Monumental Mexica Snake Sculpture Continues - Discovered last year in the heart of Mexico City at the site of the Templo Mayor, the main temple in the Mexica city of Tenochtitlan. The 500-year-old sculpture, which measures about six feet long and three feet tall, was painted with yellow, blue, red, black, and white colors made from minerals and plants employed by the Mexica on cult images and temples.

Fungal infection in the brain produces changes like those seen in Alzheimer's disease - When the fungus Candida albicans enters the brain, the body’s response generates amyloid beta (Ab)-like peptides, toxic protein fragments from the amyloid precursor protein that is considered to be at the center of the development of Alzheimer's disease.

Wildlife Photographer of the Year winners show the beauty — and precarity — of nature – My favorite is the Plants and Fungus winner (Last Breathe of Autumn) taken on Mount Olympus.

Scientists says identifying some foods as addictive could shift attitudes, stimulate research - Most foods that we think of as natural, or minimally processed, provide energy in the form of carbohydrate or fat -- but not both. Many ultra-processed foods have higher levels of both. That combination has a different effect on the brain. In a review of 281 studies from 36 different countries, researchers found ultra-processed food addiction is estimated to occur in 14 percent of adults and 12 percent of children. Viewing some foods as addictive could lead to novel approaches in the realm of social justice, clinical care, and public policy.

Flood Resilience Through Green Infrastructure - Green spaces don’t just mitigate flooding. They beautify the urban landscape and improve residents’ mental health. They filter out microplastics and other pollutants, keeping them from reaching sensitive water bodies like rivers. And when the weather is hot, they cool neighborhoods, because plants ‘sweat.’

15th-Century Theater Floorboards Uncovered in Norfolk - A combination of tree-ring dating and study of the building's construction dated the floorboards to between 1417 and 1430. This suggests that William Shakespeare may have performed on the boards!

Second report on the status of global water resources published - Large parts of the world experienced drier conditions in 2022 than those recorded on average for the equivalent periods over the last 30 years. The report results from the expertise provided by 11 international modeling groups to extrapolate from the data/statistics available. There is a particular lack of data on the situation regarding groundwater.  

More Mammals Can Glow in the Dark Than Previously Thought - By examining museum specimens, researchers documented the glowing property across 125 mammal species. Humans, for example, have fluorescent teeth, like all mammals do. In 1911, researchers reported fluorescence in European rabbits, marking the first documented case of the glowing ability in a non-human mammal.

21 species have been declared extinct, the U.S. Fish and Wildlife Service says – 10 birds, a bat, 2 fish and 8 freshwater mussels. There are now 650 species that have gone extinct in the U.S., according to the Center for Biological Diversity, which says factors such as climate change, pollution and invasive species contribute to species loss.

Gleanings of the Week Ending November 4, 2023

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The items below were ‘the cream’ of the articles and websites I found this past week. Click on the light green text to look at the article.

Oldest fossil human footprints in North America confirmed – New research that supports the dating of the footprints found in White Sands National Park to between 21,000 and 23,000 years old.

Downtown Dallas Gets a New Park – Harwood Park. It reminded me of a field trip with my parents – taking the light rail train from Carrollton to downtown Dallas to visit Klyde Warren Park and have lunch in 2014. I’m glad there is another park added to the downtown area.

BLM Releases New Plan for Moab Area - The plan limits motorized recreation to protect natural and cultural resources. I hope the BLM can succeed in reducing the impact of off road vehicles….requiring ORV users/organizations to take precautions to protect the environment for themselves and everyone else to enjoy in this area.

Active children are more resilient – Interesting….I’ve assumed this but the way the researches went about confirming the idea was worth knowing and reassuring.

A Road Trip Along the Northern Shore of Lake Superior – The Trans-Canada Highway from Thunder Bay to Marathon in June. Maybe a place we’ll go one summer?

What your hands say about your health – I wish the article had better pictures!

Trouble in the Amazon - In the southeastern Amazon, the forest has become a source of CO2….and maybe more will cease to be a carbon sink as well. Large-scale deforestation… plus even intact forest is no longer as healthy as it once was, because of forces such as climate change and the impacts of agriculture that spill beyond farm borders. Data has been collected every two weeks for 10 years! The selective logging permitted by the Forest Code in Brazil is often not sustainable. That’s because the trees that are removed are generally slow-growing species with dense wood, whereas the species that grow back have less-dense wood, so they absorb less carbon in the same space.

A Summer Light Show Dims: Why Are Fireflies Disappearing? – Habitat destruction (clear cutting, fragmentation of forests), water pollution (in Asia many firefly larvae are aquatic), pesticides and yard chemicals, light pollution (it blinds males so that they can’t find females). On a positive note: firefly ecotourism is increasing in Mexico and Malaysia….and around Great Smokey Mountains National Park in the US.

Large herbivores keep invasive plants at bay - Native plants have evolved such that they can withstand brutal treatment from species of herbivores they have co-existed with for millennia, while invasive plants usually cannot.

The Amazon May Be Hiding More Than 10,000 Pre-Columbian Structures - Based on a new aerial survey and modeling study, archaeologists suggest at least 90 percent of sites known as earthworks remain undetected. Also found - high concentrations of 53 domesticated tree species near earthwork sites. These include cacao, Brazil nut, breadnut and Pará rubber trees, plus dozens of others. This demonstrates how the region’s inhabitants altered the natural landscape, likely so they would have a steady supply of food and useful materials.

Sequoyah State Park (1)

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Sequoya State Park (near Wagoner, Oklahoma) is about 3 hours from where we live. We opted for an overnight trip last week – staying at one of the duplex cabins in the park. It was a reconnoiter type of trip: how many birds would we see (and the vantage points to see them) and were the onsite cabins/amenities OK (and should we look at other state park destinations in the future). Our arrival was well before check-in time, so we walked down to Inspiration Point. I spotted a damselfly on the walkway almost immediately.

The big event of that walk was a kettle of American White pelicans over the lake. They were far enough away that the images were not very good – but it was fun to watch them swirl – noting how the light made them almost impossible to see for a few seconds; then they would turn and were easily seen.

The fall foliage was just beginning.

There was a rock ‘table’ with stones situated for seats under two trees!

We visited the nature center then drove to a parking area to hike the Fossil Trail that hugged the eastern side of the peninsula. We were rewarded by views of pelicans and cormorants (probably double crested) – still too distant for good images but I liked the color the light gave the water.

There was the usual shelf fungus, insects (katydid…and something that bit me), lichen, plants going to seed…all under a forest canopy with a little fall color.

We were out again at sunset near our cabin – overlooking the western side of the peninsula and the lake beyond. The sky was perfectly clear so there were no interesting reflections off clouds; I included silhouettes of trees instead! There were gulls coming to roost on the water as the sun went down.

Tomorrow the post will include sunrise at Sequoyah!

Gleanings of the Week Ending October 7, 2023

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The items below were ‘the cream’ of the articles and websites I found this past week. Click on the light green text to look at the article.

Nature's great survivors: Flowering plants survived the mass extinction that killed the dinosaurs – Ancestors of orchids, magnolia, and mint all shared Earth with the dinosaurs…and are thriving today.

Woman Uses Hidden Cameras to Get Candid Look at Birds in Her Backyard – Birds (and squirrel, chipmunk, and groundhog) at the food bowl.

Climate Change Hurting Water Quality in Rivers Worldwide – Cycles of heavy rainfall and drought are impacting water quality everywhere.

Large amounts of sedentary time linked with higher risk of dementia in older adults, study shows – The average American is sedentary for about 9.5 hours per day! This study found that the risk of dementia begins to rapidly increase after 10 hours spent sedentary each day for people over 60 years old, regardless of how the sedentary time was accumulated.

The puzzling link between air pollution and suicide - More than 700,000 people kill themselves worldwide every year, according to the World Health Organization (WHO). People in the US might be particularly troubled to learn that the suicides here have increased by around 40% over the past two decades….and the nation now has one of the highest rates of wealthy, developed countries. Suicide disproportionately affects men. In the US, around 80% of suicides last year were male. More research is needed to understand the link between air pollution and suicide…but we already know that "tiny, invisible particles of pollution penetrate deep into our lungs, bloodstream and bodies…and are responsible for about one-third of deaths from stroke, chronic respiratory disease, and lung cancer, as well as one quarter of deaths from heart attack."

Archaeologists discover 1,000-year-old mummy in Peru – Long hair still preserved.

Older adults with digestive diseases experience higher rates of loneliness, depression - While life expectancy rates for older Americans are rising, nearly 40% of adults report living with a digestive disease of some kind.

A Chronic Itch: Burrowing Beneath the Skin - Approximately 20% of people suffer from chronic itch, which is medically defined as an itch lasting greater than six weeks. For many, there is no relief. Itch has historically been one of the most overlooked medical symptoms, reflected in the limited available treatment options, most of which have only been discovered recently.

Puffins Are Making a Comeback in Maine - The fifty-year effort that helped puffins rebound in Maine is cause for celebration!

Capturing carbon in savannas: new research examines role of grasses for controlling climate change - Grasses accounted for over half of the soil carbon content across tropical savannas, including soils directly beneath trees. In general, forests primarily store their carbon in the woody trunks and aboveground leaves. In contrast, a significant portion of carbon in grassy ecosystems, such as savannas and grasslands, is stored in the soil, primarily within the extensive root systems of the grasses as well as decaying organic matter. In the context of long-term carbon storage, carbon retained in soils proves to be more reliable, particularly for a vulnerable future marked by warming and increased likelihood of drought and wildfires.