Environment

cross-posted from: https://sopuli.xyz/post/11636550

Opinion piece by Sierra Solter, "a plasma physicist, engineer, and inventor who studies the intersection of heliophysics and aerospace". Relevant quote:

Upon investigating just how much dust in the form of satellite and rocket debris the space industry has dumped into the ionosphere during re-entry, I was alarmed to find that it is currently multiple Eiffel Tower’s worth of metallic ash. I wouldn’t have even been able to calculate that at all without a scientist’s personally run website. Our ozone is mere pennies thick, and soon we will be putting at least an Eiffel Tower’s worth of metallic ash a year directly into the ionosphere. And all of that will stay there, indefinitely.

How could we possibly think that burning trash in our atmosphere 24/7 is going to be fine?

Article includes an interactive & searchable map of commercial air pollution hot spots

Here is the study: Ghost roads and the destruction of Asia-Pacific tropical forests

Researcher have shown that illicit, often out-of-control road building is imperilling forests in Indonesia, Malaysia and Papua New Guinea. The roads do not appear on legitimate maps why they call them “ghost roads”.

Once these roads are bulldozed into rainforests, illegal loggers, miners, poachers and landgrabbers arrive. Once they get access, they can destroy forests, harm native ecosystems and even drive out or kill indigenous peoples. This looting of the natural world robs cash-strapped nations of valuable natural resources. Indonesia, for instance, loses around A$1.5 billion each year solely to timber theft.

All nations have some unmapped or unofficial roads, but the situation is especially bad in biodiversity-rich developing nations, where roads are proliferating at the fastest pace in human history.

"Ghost roads, it seems, are an epidemic," writes Bill Laurance, Distinguished Research Professor and Australian Laureate, James Cook University.

"Worse, these roads can be actively encouraged by aggressive infrastructure-expansion schemes — most notably China’s Belt and Road Initiative, now active in more than 150 natiions."

these of course come with their own tradeoffs, but you take what you can get

15 minute cities are great for a number of reasons, but are they really a good climate policy? David Roberts discusses with researchers Heather House and Rushad Nanavatty

Cross posted from: https://beehaw.org/post/13070792

The bloody turtle video that sparked a plastic straw revolution In 2015, PhD student Christine Figgener was on a small fishing boat off Costa Rica's Pacific Coast examining an olive ridley turtle – when she noticed something strange coming out of its nostril. Curious, she started filming as one of her research colleagues began to investigate the object. At just over eight minutes long, the video documents the uncomfortable process during which they extract a plastic straw, while blood drips from the turtle's nose.

As a marine biologist, Figgener's focus was turtles, not plastics. However, plastic had always been an issue she encountered on the field, having witnessed turtles and other animals stuck in car tires, fishing nets or plastic bags.

"Researchers have successfully transformed CO2 into methanol," reports SciTechDaily, "by shining sunlight on single atoms of copper deposited on a light-activated material, a discovery that paves the way for creating new green fuels."

Tara LeMercier, a PhD student who carried out the experimental work at the University of Nottingham, School of Chemistry, said: "We measured the current generated by light and used it as a criterion to judge the quality of the catalyst. Even without copper, the new form of carbon nitride is 44 times more active than traditional carbon nitride. However, to our surprise, the addition of only 1 mg of copper per 1 g of carbon nitride quadrupled this efficiency. Most importantly the selectivity changed from methane, another greenhouse gas, to methanol, a valuable green fuel."

Professor Andrei Khlobystov, School of Chemistry, University of Nottingham, said: "Carbon dioxide valorization holds the key for achieving the net-zero ambition of the UK. It is vitally important to ensure the sustainability of our catalyst materials for this important reaction. A big advantage of the new catalyst is that it consists of sustainable elements — carbon, nitrogen, and copper — all highly abundant on our planet." This invention represents a significant step towards a deep understanding of photocatalytic materials in CO2 conversion. It opens a pathway for creating highly selective and tuneable catalysts where the desired product could be dialed up by controlling the catalyst at the nanoscale.

Abstract credit: https://science.slashdot.org/story/24/03/30/049239/researchers-develop-new-material-that-converts-co2-into-methanol-using-sunlight

So interesting to learn about the ecological impact of cicadas. Imagine being a bird right now in Illinois. They don't even know how good they're gonna eat this summer. I'm happy for them lol

Alt text: A picture of an older smiling white man with long curly white hair is holding his jacket open, revealing a vest, tie and a gold medal around his neck. The text reads: In 2013, Brian May of Queen bought 157 acres of land that was about to be developed into buildings. He planted trees with the help of volunteers and restored it into a thriving woodland. The area is called "May's Woodland" and has over 100,000 trees growing there.

In Italy (and in most countries I've visited), waste sorting typically involves two distinct categories for compost and residual waste.

Question: Why is compost disposed of in a separate collection rather than with residual waste? Are there any environmental differences if it decomposes together with dry waste versus separately? Is it a matter of disposal efficiency, or is it simply another administrative complexity?