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 August 19, 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.

Risk of fatal heart attack may double in heat wave and high fine particulate pollution days – A study from China that included 202,000 heart attach deaths.

July Was Likely Earth’s Hottest Month on Record – The last sentence of the article: ‘Well, this is probably one of the coolest summers you’ll ever see in your life.’ ... It is quite scary to put it this way.

Climate Change Temperatures Killing Death Valley's Bristlecones – 70% mortality rate over the past decade.

The Australian town where people live underground – Coober Pedy…where most of the people live underground in abandoned opal mines or intentionally excavated spaces!

Looking Down on the Andes – Pacific Ocean, Atacama Desert, Andes…Chile, Argentina, and Bolivia. Image taken from the International Space Station.

Supermarkets to the Rescue — Coles Joins Virtual Power Plant – A grocery chain in Australia. Maybe some supermarkets (and other big box stores) in the US will do similar things.

In a Chilean Forest Reserve, the Remarkable Darwin’s Frog Endures – The endangered frog is a smallish leaf mimic with a pointy nose. Males whistle to attract mates. After females lay their eggs on the ground, males swallow them, holding them in their vocal sac as the young metamorphose. Six to eight weeks after hatching, small adults make their exit through the males’ mouths!

Moths With 11-Inch Tongues? - More than 150,000 recognized moth species, though likely another 150,000 or so, give or take, remain undescribed. Many of these species feed birds and bats like some form of “aerial plankton.” Out of the hundreds of caterpillars one moth might produce, few survive to metamorphose into moths. But those that do provide a critical service both as food for nighttime predators and as pollinators, often evolving to be the only ones that can get the job done. Every species of yucca in North America, including the famous Joshua Tree, requires pollination exclusively from yucca moths.

Spooky, stealthy night hunters: revealing the wonderful otherworld of owls - Owls occur across all continents other than Antarctica, spanning an environmental gradient from the freezing Arctic (home of the stunningly beautiful snowy owl, of Harry Potter fame) to the hottest deserts (home of elf owls).

What to know about beech leaf disease, the 'heartbreaking' threat to forests along the East Coast – I remember this entering into Master Naturalist conversations in Maryland before the COVID-19 pandemic…but the cause was a total mystery at that point. It was interesting to get an update. There is still no known way to control or manage disease, but progress has been made; large numbers of foliar nematodes cause the disease (the interfere with chlorophyll production and the trees starve). It hasn’t been that long ago that the Emerald Ash Borer killed almost all the ash trees…before that wooly adelgid killed the Eastern Hemlocks….and earlier, in the mid-1900s, the American Chestnut succumbed to blight. The eastern US forests are very different than they were 100 years ago and the pace of diseases seem to be increasing.

From the basement: pictures from house hunting in 1983

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I’ve found boxes of old pictures I hadn’t looked at since we moved into our current house about 25 years ago in the basement during my increased time at home. It’s hard not to go off on a tangent and think about that history while I am scanning pictures (and/or the negatives). This post was prompted by pictures from when my husband and I moved from Texas to the east coast for new jobs in 1983. At the time there were house listings, but they were accessible only to realtors and they didn’t include any pictures. We had a week of house hunting paid for by our new employers and we were in the process of buying a house at the end of that week! We took pictures of the top contenders with a Polaroid as well as my husband’s Canon: the Polaroids to help us decide (not rely totally on our memory of each house while we were debating) and the others to develop after we got back to Texas so that we could make detailed plans on how we would arrange our furniture in the house when we moved in late June/early July.

The pictures of houses we didn’t buy are thrown away…and the ones I’m using in this post are the film photos (I was surprised that the Polaroids were still in good shape as well) of the house we bought. The house was about 30 years old and had some light remodeling. It’s the only house I’ve owned that had a gas stove…and no fireplace. It was my first house with a basement. The yard was the high point of the place: large oak and beech tress…mature boxwood and azaleas…raised beds on two sides of the back yard. The backyard had more moss than grass. It was like a green carpet. It was quite a change from the smaller trees and overall drier conditions in the part of Texas I was moving from.

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My favorite aspect of the kitchen was the pantry!

OK – now I’m telling myself to get off this tangent and back to cleaning out the basement….

Spotlights at Brookside Gardens

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On a sunny day before one of my Wings of Fancy volunteer shifts at Brookside Gardens, I took the path down along the stream away from the conservatories. It didn’t take long before I noticed the spotlights made by the sunshine through the trees and decided to use the spotlighting as the theme for my photography that day. I like to zoom in and photograph whatever plants are in the spotlight. It has the effect of darkening the background. Some of the flowers were past prime but the spotlighting rejuvenates them as ‘interesting’ photographic subjects. I collected quite a few images in about 15 minutes and a very short walk. Azaleas, ferns, beeches - oh my!

I had been so engrossed in taking spotlighted plants that I almost missed the squirrel that was watching me from a little further along the path. I retraced my steps to not interfere with the squirrel’s morning routine. It was a good day for us all in the garden.

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Gleanings of the Week Ending February 23, 2019

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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.

BBC - Future - A high-carb diet may explain why Okinawans live so long – I was surprised that sweet potatoes played a significant role in their diet.

Photo of the Week – January 18, 2019 | The Prairie Ecologist – Ice crystals on plants and barbed wire….winter photography.

Top 25 Wild Bird Photographs of the Week: Birds Using Rivers and Lakes  and Top 25 Wild Bird Photographs of the Week: Parrots (both from the National Geographic Society Newsroom) – I’m doing a bit of catching up on the Top 25 bird posts. I always enjoy these photographic series.

A Mysterious Disease Is Killing Beech Trees | The Scientist Magazine® - Beech Leaf Disease…first spotted in Ohio in 2012 and expanding since then. It appears to be an infectious disease but the causal agent hasn’t been determined and there is no treatment yet. We have a lot of beech trees in Maryland’s forests. We lost the hemlocks and ashes….and years before the chestnuts. Each loss changes the forest.

The microbes that help make you and me and  BBC - What we do and don’t know about gut health and  Is it worth taking probiotics after antibiotics?  and How dirty air could be affecting our gut health and How to eat your way to a healthy gut – A series from BBC- Future. It seems like a lot of people could feel better if we knew more about how to keep (or regain) a healthy gut.

See the microscopic wonders of herbs – Scanning Electron Microscope images of herbs – the beauty of  plants with such distinct smells and flavors.

New wisdom about high cholesterol treatment for adults aged 80 and older -- ScienceDaily – So many of the medical guidelines were developed with trials including younger people…and the assumption was made that it would be the same for older people. But now more people are living past 80 and it’s becoming clearer that it is not always the case.

See what your ZIP code says about you using Esri's ZIP lookup tool - Business Insider – The link is at the bottom of the article. I looked at places I am familiar with and it seemed about right. This would be an interesting tool to use if you were moving to a new area…provide a different perspective to your home search.

The Hidden Environmental Toll of Mining the World’s Sand - Yale E360 – Sand is needed for concrete…and a lot of building going on in the world. The problem of extreme mining in rivers and estuaries is increasing.

BBC - Future - The natural products that could replace plastic – Can any of these happen fast enough to stop – or even reduce - the flow of plastics into our rivers and oceans and landfills?

Winter Tree Identification – Part 1

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Leaves are an easy first step to identifying a tree…but not in the winter. Other identifying characteristics come to the fore. I’ve collected up some photos from the past few winters and will show the ones I find easy to identify even in the winter. Do you recognize the white barked trees that grow near rivers and have round seeds that often stay on the tree during the winter?

The sycamores are common in our area and are easier to spot in the winter than in the summer when their big leaves sometimes hide the whiteness of their branches.

They are only one of the trees that have distinctive bark. Others are spicebush (it can be a bush or understory tree) and beech below. They both have relative smooth bark. The spicebush is speckled with light colored lenticels.

Both the sycamore and river birch have peeling bark.

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Sometime thorns can be an identifying characteristic – like with the honey locust.

The bald cypress is the only conifer I’m including in this post since it sheds its needles for the winter. It is easy to recognize by its shape and the presence of knees…and that it likes wet areas.

The dogwoods have distinctive buds. Sometimes they are described as onion-shaped. They look more like slightly flattened Hershey’s kisses to me!

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Mt Pleasant in January 2019 – Part 2

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Continuing the images from last week’s hike at Howard County Conservancy’s Mt. Pleasant….

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I noticed a bluebird box with lichen growing on its roof. I wondered how long the houses lasted. This one had a plaque below it saying it had been installed in 2009 so it’s held up for 10 years!

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There was some farm equipment near the edge of a field – covered in vines. It must not have been used for at least one season…and maybe longer. Nature is taking over! I didn’t get close enough to determine what kind of vines they might be – mile-a-minute or oriental bittersweet (both invasive) would be a good beginning guess.

With the record amount of rainfall we got in 2018, there was a root ball of a tree that fell – probably last spring.  What a dramatic change it must have been for the organisms around the roots before it fell…there would be a complex story to document different organisms came along after the tree feel and the elements alternatively dried out and filled in the hole (with water or soil washed into the hole). Nature is always in motion!

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A beech tree had been cut down and the big logs left in place.  Maybe the tree had fallen and was cut up to clear the trail or maybe it was a standing dead tree that was cut before it could fall. The center was rotting. The beech bark looks so smooth from a distance but often looks wrinkled upon closer inspection.

Ranger, the barred owl, is back in his quarters near the nature center. He seemed very calm as we hiked by. There aren’t school fieldtrips with lots of students to crowd around his space during the winter; it’s easier for him to be Zen.

It was good to be back at Mt. Pleasant for a hike…maybe I’ll go again sometime with my husband…wear boots that can get muddy and hunt for skunk cabbage peeking through the muck.

Mt Pleasant in January 2019 – Part 1

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My first hike at Howard County Conservancy’s Mt. Pleasant was last week on a cold, blustery day after a night rain. We were prepared for the cold and managed to work our way around the muddy parts of the trails. The sun played hide and seek with the clouds. I was taking pictures of winter trees. I am very familiar with a black walnut near the rock wall on the meadow side.

The nuts on the ground all around it would give it away even if I didn’t know it was a black walnut. I am always amazed that the squirrels can get the shells open with their teeth.

The path along the wall was in relatively good shape – still mostly covered with grass. We didn’t go all the way down to the Davis Branch…but cut across the meadow mid-way down the hill.

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We took the long way around to an overlook of the Branch since the lower trails were too muddy to attempt.

The water was not high, but everything looked wet. I was noticing the beech trees – easy to identify by their smooth bark.

One of the root balls that had been placed upside down in the restored part of the stream had been washed downstream by an earlier flood…and was still balanced where I’d seen it last fall. It will stay there until the next big flood. It had a collapsed pillow-like orange fungus growing on it.

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A river birch is easy to identify with its curly bark.

As we turned back toward the nature center, I noted that one of the trees across the smaller stream had finally rotted enough to collapse.

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The only ‘bloom’ I saw on the hike was the beginning of the witch hazel bloom on the tree near the farmhouse. The streamer like petals are still curled up in the opening flowers. I’ll have to remember to look at the tree every time I go to Mt. Pleasant over the next month or so!

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Zooming – September 2017

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I spent a lot of time outdoors this month; it’s fall and the weather has been near perfect. The moon was visible in the morning of one of the clear days and I took pictures through frames of leaves. This one is my favorite.

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In the first half of the month the butterfly exhibit at Brookside Gardens was still open and I have lots of zoomed pictures for that but picked two of the blue morpho for this post. Toward the end it was hard to find one with wings that were not battered and palpi intact. These two are in reasonable shape.

Then there were butterflies out in the gardens. The Mexican sunflowers and cone flowers were popular. Do you see the tree skippers (butterflies) on the yellow cone flowers? Click on the image to get a larger view.

The streams are beginning to be colorful with newly fallen leaves. The macroinvertebrates we search for to assess stream quality love matted, rotting leaves! I like the zoom on my camera that helps me get pictures without putting on my tall boots and wading into the river.

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A large silver maple was cut down this month at Mt. Pleasant (Howard County Conservancy) and I working to count the rings and create material we could use with hikes we do for elementary school children. The saw marks were so deep that it had to be sanded before we count the rings…but insect damage was evident. More on this project as it progresses…

Of course, there are plants that area always a favorite – a graceful curve of a leave with water droplets, a flower turned to face the sun, a rose on a rainy day, a beechnut husk (the goody already eaten by a squirrel), birds hunting the bounty of seeds, and a tangle of succulent.