Gleanings of the Week Ending March 07, 2026

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.

2/20/2026 BBC How ultra-processed foods affect our gut microbiome - The additives added to processed food to keep it fresher for longer might be having an unexpected effect on the health of the microbes in our guts. Research carried out on both animals and humans appears to pinpoint a direct link between emulsifiers and ill health. One French study of more than 100,000 adults in 2024 found those who were more exposed to emulsifiers had a greater risk of type 2 diabetes. Another study of more than 90,000 adults found a potential link between emulsifiers and breast and prostate cancers.

2/20/2026 Smithsonian Magazine Researchers Retrieve the Deepest-Ever Rock Core from Beneath Antarctica’s Ice. It Holds Clues About the Earth’s Past—and Future - The 748-foot-long sediment core contains a record of roughly the past 23 million years, including periods when the planet’s surface temperature was hotter than it is today.

2/20/2026 National Parks Traveler Tidal Basin Gets Hundreds of New Cherry Trees - Paid for by a generous donation from the nation of Japan, the trees represent the most recent chapter in this remarkable cultural exchange dating back to Japan's original gift of cherry trees in 1912.

2/19/2026 Science Daily New sodium ion battery stores twice the energy and desalinates seawater - Being able to use sodium vanadate hydrate in salt water is a really exciting discovery, as it shows sodium-ion batteries could do more than just store energy -- they could also help remove salt from water. In the long term, that means we might be able to design systems that use seawater as a completely safe, free and abundant electrolyte, while also producing fresh water as part of the process.

2/18/2026 The Guardian Hazardous substances found in all headphones tested by ToxFREE project - Bisphenol A (BPA) appeared in 98% of samples, and its substitute, bisphenol S (BPS), was found in more than three-quarters. Synthetic chemicals used to stiffen plastic, BPA and BPS mimic the action of estrogen inside organisms, causing a range of adverse effects including the feminization of males, early onset puberty in girls, and cancer. Previous studies have shown that bisphenols can migrate from synthetic materials into sweat, and that they can be absorbed through the skin. Given the prolonged skin contact associated with headphone use, dermal exposure represents a relevant pathway, and it is reasonable to assume that similar migration of BPA and its substitutes may occur from headphone components directly to the user’s skin.

2/17/2026 The Conversation Air pollution may directly contribute to Alzheimer’s disease – U.S. researchers tracked nearly 28 million older adults over six years nationwide. They found that those exposed to higher levels of fine particulate air pollution were more likely to develop Alzheimer’s. The US study used Medicare insurance claims to confirm Alzheimer’s diagnoses and area data by postcode for fine particle pollution levels. It also looked at other factors that could explain the link, such as the proportion of smokers or overweight people living in more or less polluted areas.

1/15/2026 Science Daily Scientists question the safety of BPA-free packaging - BPA-free is an incredibly misleading label. It usually means one bisphenol has been swapped for another, and there are more than 200 of them. Some may be just as harmful, or even worse. We need to test these compounds before they're widely adopted, not after.

2/11/2026 Archaeology Magazine What Caused Ancient People to Abandon a Fruitful Bison Hunting Site? - For around 700 years, Native people of the American Great Plains hunted bison at a site in central Montana that archaeologists call Bergstrom. Then, around 1,100 years ago, humans abandoned the site even though bison remained abundant in the area. Researchers discovered that drought caused the water supply to process the animals at the site dried up…forcing the hunters to move away.

2/23/2026 Planetizen California Seals 21 Urban Oil Wells in South LA After Decades of Activism – There are too many stories like this – why do we ever trust the oil companies to not walk way and leave a toxic mess? I’m glad the state is stepping in…but the companies that made money from the site over the years need to be held financially accountable.

2/23/2026 Science Daily Babies exposed to far more “forever chemicals” before birth than scientists knew - By using advanced chemical screening on umbilical cord blood, scientists detected 42 different PFAS compounds, including many that standard tests do not routinely check for. These long lasting chemicals are found in common products like nonstick cookware, food packaging, and stain resistant fabrics, and they can build up in the body over time. The study helps show that prenatal PFAS exposure is more complex and widespread than earlier studies suggested

Gleanings of the Week Ending December 6, 2025

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.

Vitamin C Rejuvenates Aging Ovaries in Primates - A long-term primate study suggests vitamin C may slow ovarian aging by reactivating antioxidant defenses—though fertility effects remain untested. Oxidative damage contributes to aging not only in ovaries but also in the brain, heart, and kidneys—raising the possibility that similar interventions might benefit other organs.

Rings of Rock in the Sahara - In northeastern Africa, within the driest part of the Sahara, dark rocky outcrops rise above pale desert sands. They are thought to have formed as magma rose toward the surface and intruded into the surrounding rock. Repeated intrusion events produced a series of overlapping rings, their centers roughly aligned toward the southwest. The resulting ring complex—composed of igneous basalt and granite—is bordered to the north by a hat-shaped formation made of sandstone, limestone, and quartz layers. Photo taken from International Space Station.

How your hormones might be controlling your mind - Hormones are chemical messengers released by certain glands, organs, and tissues. They enter the bloodstream and travel around the body, before binding to receptors in a specific place. The binding acts as a kind of biological "handshake" which tells the body to do something. For example, the hormone insulin tells liver and muscle cells to suck up excess glucose from the blood and store it as glycogen. We still don't understand exactly why some people are so sensitive to hormonal fluctuations, while others aren't. We know that hormones impact mood and mental health, but we need to figure out how they do so before we can come up with the proper treatments.

Texas Voters Approve $1 Billion per Year for 'Critical' Water Infrastructure – Wise move by Texas voters; hopefully it will be enough to keep up with the state’s growing population and resulting demand for water. More details here.

How Does Sugar Affect Our Oral Microbiome and Teeth? - Less processed foods, especially those high in fiber, are often less sticky, which decreases bacteria’s ability to adhere and overgrow at a surface. Additionally, the fiber acts like miniature brushes. “These fibers constantly remove plaque from your tooth surfaces. The additional chewing of these types of foods also increases saliva production, which washes out the oral cavity, removing excess bacteria from the mouth surface to limit the formation of biofilms. Meanwhile, additional sugar from candy and other sweet products disrupts this whole community. Not only are these processed foods stickier, giving the bacteria a place to latch onto, but they also form biofilms.

How Satellite Imagery Reveals Plastic Pollution Hotspots in the Ocean - Plastic pollution isn’t just a sad environmental story we scroll past on the news anymore; it has become a personal health emergency. It is a genuinely scary reality that microplastics, those tiny, unseen fragments, have made their way into our lungs and bloodstreams. To grasp the sheer scale of this threat, researchers are turning to Sentinel satellite imagery, utilizing it as an essential “eye in the sky” to track exactly where these hazardous accumulation zones are growing. However, mapping is just the diagnostic tool; the ultimate cure lies in fixing land-based waste management.

The photos showing why pink dolphins are the Amazon's 'great thieves' - As fishermen cast their nets into the river, suddenly a sleek pink shape emerged from the depths, swimming toward the trapped fish. Moving quickly, the creature – an Amazonian pink river dolphin – poked holes in the net and stole a catfish. Known locally as boto in Portuguese and bufeo in Spanish, the pink river dolphin is a funny sight. With its melon-shaped head, rose-colored skin, and slender, hundred-toothed snout, it is the largest freshwater dolphin in the world, growing up to 2.5m (8.2ft) long and weighing as much as 200kg (440lbs). Four types of pink river dolphins live in the Amazon River basin. All of them are endangered, facing significant population declines in recent decades due to hunting, entanglement in fishing nets, pollution and droughts.

Half of heart attacks strike people told they’re low risk - A new study led by Mount Sinai researchers reports that commonly used cardiac screening methods fail to identify almost half of the people who are actually at risk of having a heart attack. People who appear healthy according to standard assessments may already have significant and silent atherosclerosis. Because of this, depending solely on symptoms and risk calculators can delay detection until meaningful prevention is no longer possible. Doctors should shift their focus from detecting symptomatic heart disease to detecting the plaque itself for earlier treatment, which could save lives.

Clogged Glymphatic System Linked to Dementia Risk - The brain’s built-in clearance system, called the glymphatic system, removes toxins from the brain through the flow of cerebrospinal fluid (CSF) via minuscule channels that trace blood vessels. Scientists have suspected that the glymphatic system may play a role in processes such as sleep and recovery from traumatic brain injury. MRI scans from nearly 40,000 people revealed biomarkers linked to defective toxin clearance in the brain predicted the susceptibility to dementia later in life.

Ansel Adams Photos Capture Daily Life Inside Japanese Internment Camps During WWII - The establishment of Japanese internment camps is arguably one of the darkest moments in American history. Between 1942 and 1946, about 120,000 people of Japanese descent were forcibly relocated into these concentration camps. This was done out of unfounded suspicions that Japanese Americans might act as saboteurs or spies following the attack on Pearl Harbor in 1941. In 1943, celebrated American photographer Ansel Adams visited the Manzanar War Relocation Center in California, creating a timeless document of the daily life on this site. The 244 photo collection can be browsed on the Library of Congress website.

Gleanings of the Week Ending June 29, 2019

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.

Porcupines | National Geographic – I was disappointed that they didn’t include more pictures of the North American Porcupine. I’ve never seen one in the wild.

BBC - Future - How to build something that lasts 10,000 years – Specifically – this post is about building a clock that will last for 10,000 years…in West Texas!

Researchers uncover indoor pollution hazards -- ScienceDaily – Some surprises: pollutants change with temperature inside the house….and time of day makes a difference. Formaldehyde seems to be particularly prevalent. These studies are scary for existing homes. We need work on mitigations that homeowners can implement…and new construction that reduces the source of pollutants.

Infographic: Immunity Isn't the Body's Only Defense System | The Scientist Magazine® - Symbiotic bacteria, metabolism and pathogen mutation examples overlay the immunity strategy. As we learn more, we realize that the human body is more complex that we realized.

Top 25 Wild Bird Photographs of the Week: Blue – National Geographic Society Newsroom – So many blue birds!

Tortoises rule on Aldabra Atoll – Tortoises making their way through the huts where people bunked! The tortoises sleep with head and legs stretched out…no predators to fear on the inhospitable atoll.

Past climate change pushed birds from the northern hemisphere to the tropics -- ScienceDaily – Thought provoking. I wondered if some of the birds that now migrate from North America to Central or South America for the winter….will not go as far or will shift their range northward.  I suppose it would work if their food sources shifted and the birds followed the food. The synchrony of plants blooming and seeds ripening….of horseshoe crabs laying eggs…all while birds are migrating or getting ready to produce young; it’s not a simple system.

Making STEM Education More Welcoming to Underrepresented Minorities | The Scientist Magazine® - Education doesn’t happen in a vacuum that has well defined boundaries. We must do more than just academic support…I’m glad there is more research and conversation on how to move forward in tangible ways to make STEM education and careers more open to everyone.

An Ancient Asteroid Crater May Be Hiding Off Scotland’s Coast | Smart News | Smithsonian – Some recent work that points to a crater of a asteroid from 1.2 billion years ago.

Three Studies Track People's Microbiomes Through Health and Disease | The Scientist Magazine® - Interesting…but they could just be expensive association studies (a quote from the end of the paper). At some point, maybe the findings will lead to something that benefits the patient.

Gleanings of the Week Ending March 9, 2019

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.

Top 25 Wild Bird Photographs of the Week: January and Top 25 Wild Bird Photographs of the Week: February and Top 25 Wild Bird Photographs of the Week: Feathers and Top 25 Wild Bird Photographs of the Week: Forest Birds – From National Geographic. There are multiples this week since I seemed to have a backlog in my gleanings holding area. Enjoy the colorful, graceful images.

'Upcycling' plastic bottles could give them a more useful second life -- ScienceDaily – Now that many countries that used to take our recycle waste have stopped accepting it, we are suddenly facing the problem of what to do with ‘recyclables’ closer to home. Making materials that have higher value is one way to keep more of it from ending up in landfills.

Soundscapes of Arizona’s Aravaipa Canyon – Cool Green Science – Listen to some nature audio…if it’s too cold to get outside and into the wild right now! These would make great backdrops to a meditation practice.

Image of the Day: Prickly Legs | The Scientist Magazine® - Froghoppers gain traction for jumping by piercing plant surfaces with their spiny legs! (Note: froghopper nymphs are spittlebugs!)

Photography in The National Parks: A Winter Shutdown Stay in Olympic National Park – I want to go! This is a national park I haven’t visited.

What kind of bug is a bug? | The Prairie Ecologist – A little entomology lesson.

Alaska in Flux: Slumping Coastlines – A comparison of a coastline between 1992 and 2018 …showing land slumping in to the Beaufort Sea. An airport is closer to the water now than in 1992.There is also a map showing that quite a bit of Alaska is wetter that is was in 1984. Lots of changes in the Alaska land.

Work Underway to Return the Shine to Thomas Jefferson Memorial – The Jefferson Memorial is probably my favorite in DC. I’m glad it’s getting the renovation it needs to look good into the future.

14 keys to a healthy diet | Berkeley Wellness – A little update based on most recent recommendations (for example, dietary cholesterol is not something to worry about since it has little effect on most people’s blood cholesterol).

Infographic: How Ginger Remodels the Microbiome | The Scientist Magazine® - I like ginger and am including it more consistently in my diet. It’s another food to boost gut health!

Gleanings of the Week Ending June 16, 2018

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.

Reading habits in the past | Europeana Blog – When I travel, I tend to do most of my reading on my phone (light weight, easy to carry, and ambient light does not have to be good). It’s a recent development for me. This blog post goes back further in history.

Man against machine: AI is better than dermatologists at diagnosing skin cancer -- ScienceDaily – There are still limitations to the AI but it might be close to a tipping point to begin transitioning into system. It seems like it would be most in demand for screening where there were not highly trained dermatologists available….as long as the imaging technology was not tremendously expensive or hard to use.

BBC - Future - Is it really healthier to live in the countryside? – I thought it would be…but it’s complicated because so many factors contribute to ‘health.’

Mapping Modern Threats to Ancient Chacoan Sites : Image of the Day – Posts about places I’ve visited always get my attention. A study using satellite data and projections for population growth/oil and gas exploration in the area shows that 44 of the 123 known Chaco sites included in the study are threatened by development. Of those, 19 are already protected by the National Park Service.

Paper Art Details Similarities Between Human Microbiome and Coral Reef – Nature inspired art!

Researchers Grow Veggies in Space | The Scientist Magazine® - Progress in a technology required for longer space missions…and then colonies on other planets.

Schoolyard Habitats Provide Resiliency in Houston Independent School District : The National Wildlife Federation Blog – Schools in Maryland have similar projects. I hope the monarchs have shown up in Houston…I haven’t seen any in Maryland yet this year.

US Still Subsidizing Fossil Fuels To Tune Of $27 Billion | CleanTechnica – This post included more detail on what subsidies are…how the US compares to other developed countries.

Thank A Rare Fungus For The Sustainable Solar Cell Of The Future | CleanTechnica – It’s a beautiful color…if it really works, it won’t be ‘rare’ for long. It will be come a commercially grown fungus!

Bright warning colors on poison dart frogs also act as camouflage -- ScienceDaily – Learning a bit more about these little frogs.