Gleanings of the Week Ending May 11, 2024

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 new way to quantify climate change impacts: 'Outdoor days' - Noting the number of days per year that outdoor temperatures are comfortable enough for normal outdoor activities. In the North, in a place like Russia or Canada, you gain a significant number of outdoor days. And when you go south to places like Bangladesh or Sudan, it's bad news. You get significantly fewer outdoor days.

Is filtered water healthier than tap water? - Water filters, it seems, are having a heyday – particularly in North America, Europe, and China. I was a little surprised that the article did not mention microplastics in water – even in countries that have relatively high standards for their water supplies.

Baltimore’s Toxic Legacies Have Reached a Breaking Point – “Normal” southwest of the collapsed Frances Scott Key Bridge in Baltimore…one of the most polluted places in the U.S. – a different perspective on the bridge collapse.

European ruling linking climate change to human rights could be a game changer — here’s how - On 9 April, the European Court of Human Rights delivered a groundbreaking ruling: states are obliged to protect their citizens from the threats and harms of climate change. And in that regard, judges said, Switzerland’s climate action has been inadequate. Without prescribing specific years or percentage reductions, the ruling set out how a nation can show it is compliant. It must set out a timetable and targets for achieving carbon neutrality, and pathways and interim targets for reducing greenhouse-gas emissions. Measures must be implemented in a timely, appropriate, and consistent manner. Governments must also provide evidence that they have complied with targets, and update targets regularly.

Positive perceptions of solar projects - A new survey has found that for U.S. residents living within three miles of a large-scale solar development, positive attitudes outnumbered negative attitudes by almost a 3-to-1 margin.

18th-Century Foundation Uncovered at Colonial Williamsburg – Even in much studied areas, there are still new things to discover!

Metabolic health before vaccination determines effectiveness of anti-flu response - Metabolic health (normal blood pressure, blood sugar and cholesterol levels, among other factors) influences the effectiveness of influenza vaccinations….even in people with obesity which the vaccine had previously been documented as being less effective.

The environmental cost of China's addiction to cement - Today, China still accounts for just over half of the world's total annual 4.1bn tons of cement production (52%) – followed by India (6.2%), the EU (5.3%) and the US (1.9%). Little of that cement produced in China is exported. In 2020 the country used an estimated 2.4 billion tons of cement, 23 times the amount used in the US in the same year.

Teotihuacan's Pyramids Damaged by Ancient Earthquakes – Damage from megathrust earthquakes at the site between about AD 100 and 600: fracturing and dislodging of large masonry blocks used to construct the buildings, as well as chipping of blocks that comprised the pyramids' outer stairs.

Mini-colons revolutionize colorectal cancer research - Scientists have combined microfabrication and tissue engineering techniques to develop miniature colon tissues that can simulate the complex process of tumorigenesis outside the body with high fidelity, giving rise to tumors that closely resemble those found in vivo….offering a new path to research colon cancers and their treatment.

Trek to and in Druid Hill Park – Part II

On out way to Druid Hill Park through Baltimore, there were some trees that still had most of their leaves! All the ones around our house in the suburbs to the south of the city and the airport have lost all their leaves.

I wondered if it was the heat island effect of the city or the disruption of wind by building and walls; there are some city microclimates that cause the trees to keep their leaves a bit longer…very noticeable right now. I also noticed tents periodically on medians and places along the road with a little more space (see tent on the right under the trees in the picture below); is this the way the homeless people in Baltimore are surviving this winter?

There is graffiti on buildings…but there are also bits of city art on otherwise mundane buildings. I wondered if the height and lights are have kept the art intact in some places.

On the way home – the GPS routed us through downtown and I took pictures of the Bromo-seltzer Tower as we stopped at lights. It’s used for artists studios now….next to a fire station.

Overall – the birding walk was a tiny step back to ‘normal’ for us although both by husband and I are beginning to realize that we’ll probably never be quite like we were pre-pandemic. It’s not just the pandemic that has changed us; more on that thought is few days when I write my month COVID-19 pandemic post.

Trek to and in Druid Hill Park – Part I

Last weekend we drove into Baltimore for an Audubon sponsored birding walk at Druid Hill Park. It was our first birding event since before the pandemic – outdoors for 1.5 hours in a park with less than an hour to commute into the city and the back home afterward. It was a cool, cloudy morning – cold enough to wear a mask comfortably which we both did once the group started the walk and it was hard to maintain distance.

The walk started at 8 AM and the clouds occasionally parted enough for good lighting. I saw more birds that I was able to photograph. Canada Geese flew overhead and there were ruddy ducks, buffleheads, grebe, and gulls on the lake in the park. They were too far away for great pictures…but I like the light around the gulls. There were also a lot of smaller birds – cardinals, Carolina wrens, down woodpecker, gold finches, house finches, etc.. The only one I photographed was a norther flicker what perched almost right overhead!

There was still some great fall color. The rose bushes (red leaves) were enjoying the cooler weather.

There were some areas of the forest that still had lots of leaves on the trees…like our backyard was several weeks ago. I also saw a small tulip poplar tree; I hadn’t realized that there leaves get much larger when they are young; this one still had green leaves while the big trees around it were already bare showing off their many seed pods.

More tomorrow about our trek to the park…and then home again…through Baltimore.

Short Hike at Howard County Conservancy – 3

Continuing the posts about our recent hike at Howard County Conservancy’s Mt. Pleasant

We met some birders along the path along the restored part of Davis Branch …they told us about a heron standing in the stream. My husband and I went into quiet mode as we walked – checking the stream through the vegetation between the trail and the water…looking for the heron. Nothing. We got to the end of the trail and headed back…and saw it! The vegetation had blocked the view coming from the other direction.

The birds was a Black-crowned night-heron. It was standing very still in a shady riffle. At one point, we though the bird might be looking for breakfast, but we didn’t see it go after a fish or move very much for the time that we were watching. It did look around briefly. The red eye is striking.

I enjoyed experimenting with camera adjustments and magnification. It helped that the bird was so still. The smooth water in the foreground was a contrast to the turbulence beyond the bird.

Then bird then flew to a nearby snag in the wetlands area. I zoomed in for a closer look at the feet.

This was the first time I’d seen a Black-crowned night-heron at Mt Pleasant. I vividly remember seeing one on a birding field trip in Baltimore back in May 2018 – standing in trash that had accumulated in the water. It was refreshing to see the bird in better habitat.

Free eBooks – September 2019

Usually I feature 3 books. This time I am featuring one book…and a series of 10 books (6 of which I read in September).

Marriott, Charles. Modern Art – a collection of works in modern art. New York: Frederick A. Stokes Co. 1917. Available from Internet Archive here. A good selection of what was ‘modern’ during World War I. The illustrations are in color.

23q 19 09.jpg

Bushell, Stephen Wootton. Oriental Ceramic Art – illustrated examples from the collection of W.T. Walters. New York: D. Appleton and Company, 1897. Ten volumes available from Internet Archive here. This collection formed the basis of the Walters Art Museum in Baltimore that was formed by his son. Walters died in 1894; he had prepared parts of the volumes that were then edited and published after his death. I still have 4 volumes to savor…in October! I picked a sample image from each of the 6 I’ve already browsed for this post.

Baltimore Birding – part 3

We continued our Baltimore Birding experience with a walk around Fort McHenry the next morning. It was mostly sunny and warmer. Even with the better light and no rain – I saw more birds than I managed to photograph. I’m featuring the ones that say still long enough for me to get the camera in position. There were quite a few Great Crested Flycatchers (I remember seeing one in my back yard last year about time…posted about it here).

2018 05 IMG_0750.jpg

There were American robins in the grass.

2018 05 IMG_0753.jpg

The small birds moved around rapidly in the trees. I think this one is an orchard oriole.

2018 05 IMG_0756.jpg

I photographed mushrooms when I saw them. The mulch was support several groupings….and a sycamore stump had a collection of small shelf fungus.

There was a grackle aggressively defending a trash can at the front of the visitor center.

There were mallards about. There was a female that looked calm for the moment…the males were being very aggressive.

2018 05 IMG_0770.jpg

There was a ‘mixed breed’ duck…probably mallard and a domestic duck of some kind.

There were some sycamores along the path that did not look healthy. I wondered if salt water incursion was happening through the seawall around the fort….or maybe they are all the same age and getting old. I took a picture of one that already had its top gone; there was a knot with leaves sprouting at about eye level with ‘wrinkles’ on all sides – almost like skin.

We headed over to a marshy are beside the fort…and I managed to finally get a picture of a one kind of swallow we say: a tree swallow. We saw barn swallows on our walk as well.

2018 05 IMG_0799.jpg

Overall our Baltimore Birding experience provided a different perspective on the city. I would guess that birding in just about any city would have the same results. Maybe it is something we should do more often….although the amount of trash (particularly in the water) is always depressing.

Baltimore Birding – part 1

My husband and I participated in the Baltimore Birding Weekend this past weekend. It’s a new perspective on the city for us. On Saturday morning we participated in a session that started at Swann Park and then walked several segments of the Middle Branch Trail parking convenient to trail access: in the Harbor Hospital parking lot, on Warner Street near the Horseshoe Casino, then at the boathouse at Middle Branch Park on Waterview Ave. It rained for most of the time we were out, but my husband and I stayed dry enough in boots, rain pants and windbreakers (I used an umbrella part of the time because my windbreaker was not as waterproof as I thought it was).

Because it was raining and cloudy…and I was often holding the umbrella….I didn’t get as many pictures as usual although the umbrella enabled me to get more than I would have otherwise because it kept the rain off the camera. There were a lot more birds that I saw but couldn’t photograph. The bird pictures are often good enough for id but not much else. At the first stop (Swann Park) – I managed a double-crested cormorant (way out over the water) and killdeer (on the walkway ahead of us).

The second stop (accessed from the Harbor Hospital parking lot) was cut short by the path being flooded under a bridge. We did see a mallard family (4 ducklings) head out into the water before we turned around and went back to our cars.

2018 05 IMG_0691.jpg

We parked along Warner Street near the Casino next. Our destination was the Gwynn Falls/Middle Branch trail head, but we stopped to note the bird mural on one of the buildings.

2018 05 IMG_0698.jpg

There were a lot of smaller birds in the woods which I didn’t manage to photograph but the rain let up slightly and we stood on a bridge over the water. The trash was depressing (it is everywhere but particularly in the water…some of it probably came from a long way down the Patuxent River). The black-crowned night heron seemed to take it in stride.

2018 05 IMG_0704.jpg

There was a green heron nearby as well.

But the highpoint of being on the bridge was a belted kingfisher that flew toward us, under the bridge and then settled onto a branch. I took some pictures. It had a fish but made no move to swallow it….and then it flew on.

I’ll continue our adventure in Baltimore Birding in tomorrow’s post.

Gleanings of the Week Ending October 21, 2017

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’s With That Dam? : The National Wildlife Federation – We got to Conowingo to see bald eagles….so I was interested in learning more about it. Evidently - the dam’s current impact on the Chesapeake Bay is not a positive one.

On Bee-ing – Cool Green Science – About the Minnesota Bee Atlas.

Stunning Video Captures Humpback Whales Catching Fish with Nets of Bubbles | Smart News | Smithsonian – I’d heard of this phenomenon but the video is still thrilling! Well work the 40 seconds!

How honeybees read the waggle dance -- ScienceDaily – The field trip the Howard County Conservancy does for 3rd graders includes a segment on the waggle dance….so I read this article to find out more about it….both the history of its discovery and the current research on the neurons responding to the dance.

Bathtub Bloodbath, 1793 | The Scientist Magazine® - A famous painting of Jean-Paul Marat murdered in his bath…what he was before his revolutionary activities.

Adaptation as Acceptance: Toward a New Normal in the Northwoods – Cool Green Science – Forests are changing – with climate change and invasive insects like emerald ash borer and woolly adelgid culling some trees that were, until recently, common in our forests. There is a grief for those lost trees that will not make a comeback. This article is about finding hope via adaptation. The forest will be different…but still forest.

Meet the Transgenic Silkworms That Are Spinning out Spider Silk | The Scientist Magazine® - Spider silk combines elasticity and strength but has been difficult to produce. Now the fiber is produced by silkworms and the increased availability makes it viable for a host of applications. It will be interesting to observe how the market develops.

Treetop Walkway Provides an Elevated Path Through Danish Forest – What an awesome way to observe a forest!

National Mall and Memorial Parks – Hope the laser ablation of the biofilm on the Jefferson Memorial works as well as the test spot. The dome has gotten a lot grayer over the years from ‘biofilm.’

Seeing Big Changes in Baltimore: The National Wildlife Federation Blog – Hurray for the schools and students in Baltimore provided wildlife habitat!