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David Kirchman

@microbe700.bsky.social
39 followers 23 following 47 posts
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David Kirchman @microbe700.bsky.social · 05/08/2026
Loved joining @worthingtonbry.bsky.social on the Cleaning Up Podcast (@cleaninguppod.bsky.social) this week, to talk about how microbes shape our climate, generate green energy, and help to minimize agriculture’s environmental impact. Tune in: www.cleaningup.live/socials/
cleaningup.live
Where to Find Cleaning Up
Cleaning Up's official channels: YouTube: https://www.youtube.com/@CleaningUpPod Spotify: https://open.spotify.com/show/0msi0HzVNM05S6rMO5bbpn?si=fcb95bc475e241…
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David Kirchman @microbe700.bsky.social · 03/08/2026
I’m pleased to announce the publication of a new edition of Processes in Microbial Ecology, a textbook covering all microbes in soils, lakes and the oceans. It has many new things, including a coauthor, Ashley Shade. Available online at academic.oup.com/book/63173
academic.oup.com
Processes in Microbial Ecology
Abstract. Processes in Microbial Ecology discusses the major processes carried out by viruses, bacteria, archaea, fungi, protozoa, and other protists—the m
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David Kirchman @microbe700.bsky.social · 26/03/2026
"By being the largest carbon emitter in history, the US has caused greater harm to worldwide economic growth than any other country, ahead of China, now the world’s largest emitter that is responsible for $9tn in GDP damage since 1990." www.theguardian.com/environment/...
theguardian.com
US has caused $10tn worth of climate damage since 1990, research finds
US, top carbon emitter in history, has ‘a lot of responsibility’ for causing ‘substantial’ harm globally, scientist says
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David Kirchman @microbe700.bsky.social · 23/03/2026
Because of AI power demands "batteries will account for some 28% of new U.S. power plant capacity built this year. For the first time, the country will be able to produce enough grid batteries to meet that surging demand on its own," www.canarymedia.com/articles/cle...
canarymedia.com
Suddenly, the US manufactures a ton of grid batteries
Energy storage is surging on the U.S. grid — and now the country has more than enough battery-making factories to meet that booming demand.
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David Kirchman @microbe700.bsky.social · 17/03/2026
"the top 25 list..is dominated by facilities in Turkmenistan...Super-polluting plumes were also seen in the US, the largest detected in 2025 occurring in Texas.. Venezuela (five) and Iran (three) also had multiple mega-leaks. www.theguardian.com/environment/...
theguardian.com
Revealed: the world’s worst mega-leaks of methane driving global heating
Exclusive: Fixing a leak can be simple and equivalent to closing a coal power station, making lack of action maddening, say analysts
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David Kirchman @microbe700.bsky.social · 17/03/2026
This blog post is about how to use large language models (i.e. AI) in analyzing ecological data. The bottom line: "LLMs can help you do better statistics, but only if you ask well. And “asking well” is a learnable skill." www.r-bloggers.com/2026/03/prom...
r-bloggers.com
Prompting large language models for quality ecological statistics | R-bloggers
Like it or not, everyone is using large languageden models to help do their statistics. There’s a lot of claims made about whether LLMs can or can’t do useful ecological statistics. In our new paper “...
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David Kirchman @microbe700.bsky.social · 14/03/2026
"a conventional wastewater treatment plant... captures over 95% of methane, compared to roughly 50% at landfills, saving the atmosphere from additional greenhouse gases. theconversation.com/how-sewage-t...
theconversation.com
How sewage treatment plants could handle food waste, sparing landfills and the climate
Rather than generating climate-warming emissions and wasting nutrients and energy, food waste can become a resource if processed in sewage treatment plants.
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David Kirchman @microbe700.bsky.social · 04/03/2026
Owusu et al. say that either top-down control (e.g. grazing) or nutrient limitation (e.g. N) shape bacterial communities which in turn set DOC levels in the oceans. The EOS piece by @saimamay.bsky.social is a good summary. eos.org/research-spo... @saimamay.bsky.social
eos.org
Bacteria Decide the Ocean’s Dissolved Organic Carbon Abundance - Eos
Dissolved organic carbon prevalence follows from how many bacteria are around to eat it, modeling suggests.
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David Kirchman @microbe700.bsky.social · 17/12/2025
"..this study provides strong evidence that microbial sources, such as those from wetlands, agriculture, and waste, are primarily responsible for the post-2006 methane rise.." but the microbes are being stimulated by global warming. www.pnas.org/doi/10.1073/...
pnas.org
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
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David Kirchman @microbe700.bsky.social · 26/07/2025
"Air-Borne reads like a real-world thriller, filled with human ingenuity, persistence, hubris, and arrogance; with pandemics and biological weapons; and, so it seems, with every bad decision under the sun." @carlzimmer.com inquisitivebiologist.com/2025/07/23/b...
inquisitivebiologist.com
Book review – Air-Borne: The Hidden History of the Life We Breathe
A real-world thriller of hubris, pandemics, and biological weapons, Air-Borne brilliantly tells the complex and multifaceted history of aerobiology.
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David Kirchman @microbe700.bsky.social · 11/07/2025
This review by the Inquisitive Biologist almost convinced me to get Macfarlene's latest (loved his last book, Underland). inquisitivebiologist.com/2025/07/04/b...
inquisitivebiologist.com
Book review – Is a River Alive?
Is a River Alive? is a hydrological odyssey into three river systems that sees Macfarlane wrestle with this question and examine its relevance to the nascent Rights of Nature movement.
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Reposted by David Kirchman
Sarah Cooley @co2ley.bsky.social · 27/06/2025
💔
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David Kirchman @microbe700.bsky.social · 21/06/2025
Bans on plastic bags like in Delaware work. This WaPo article is based on a report just published in Science by Delaware's Kimberly Oremus. @kimberlyoremus.bsky.social @washingtonpost.com, @allysonchiu.bsky.social www.washingtonpost.com/climate-solu...
washingtonpost.com
Plastic bag fees and bans help protect beaches and riverbanks, study finds
But even places with bag policies are seeing a greater prevalence of plastic bags on beaches and riverbanks.
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David Kirchman @microbe700.bsky.social · 18/06/2025
Another useful review by the Inquisitive Biologist about an interesting book. inquisitivebiologist.com/2025/06/18/b...
inquisitivebiologist.com
Book review – Super Natural: How Life Thrives in Impossible Places
An entertaining romp through life’s outliers, Super Natural explores the extreme conditions under which some organisms not only survive, but often thrive.
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David Kirchman @microbe700.bsky.social · 11/06/2025
"Ebb plans to use a method called electrochemical ocean alkalinity enhancement (OAE) to mimic the natural process of ocean alkalisation – in other words, it wants to add huge amounts of alkaline materials to ocean waters..." @climatenews.bsky.social www.theguardian.com/environment/...
theguardian.com
A drop in the ocean: does experimental technology hold the key to saving the world’s seas?
Investment is pouring into companies promising to geoengineer a rapid change in the pH of our waters – but critics are concerned at the speed at which unproven methods are being adopted
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David Kirchman @microbe700.bsky.social · 09/06/2025
Ocean acidification’s “planetary boundary” was crossed about five years ago. @climatenews.bsky.social www.theguardian.com/environment/...
theguardian.com
‘Ticking timebomb’: sea acidity has reached critical levels, threatening entire ecosystems – study
Ocean acidification has already crossed a crucial threshold for planetary health, scientists say in unexpected finding
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David Kirchman @microbe700.bsky.social · 16/05/2025
Carbon Brief also reports that EV sales in emerging markets in Asia and Latin America in 2024 rose by 60% @carbonbrief.org www.carbonbrief.org/analysis-cle...
carbonbrief.org
Analysis: Clean energy just put China’s CO2 emissions into reverse for first time - Carbon Brief
For the first time, the growth in China’s clean power generation has caused the nation’s carbon dioxide (CO2) emissions to fall despite rapid power demand growth.
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David Kirchman @microbe700.bsky.social · 14/05/2025
"Previous research from Sweden has found men’s spending on goods causes 16% more climate-heating emissions than women’s." @us.theguardian.com www.theguardian.com/environment/...
theguardian.com
Car use and meat consumption drive emissions gender gap, research suggests
The French study of 15,000 people shows men emit 26% more pollution due to eating red meat and driving more
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David Kirchman @microbe700.bsky.social · 12/04/2025
"Sunnier, windier days helped propel clean sources past gas and coal in March. " Probably won't last but enjoy the good news for a bit. www.canarymedia.com/articles/cle...
canarymedia.com
Chart: In a first, clean power beat fossil fuels on US grid last month
Sunnier, windier days helped propel clean sources past gas and coal in March. It’s a milestone for the U.S. energy transition.
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David Kirchman @microbe700.bsky.social · 25/03/2025
"For managed honeybees, a lack of nutrition, poor handling practices and rampant infestation by varroa mites, a type of parasite, and diseases have also taken their toll." www.theguardian.com/us-news/2025...
theguardian.com
US honeybee deaths hit record high as scientists scramble to find main cause
US Department of Agriculture calls in university to help study decline as Trump administration staff cuts sting
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David Kirchman @microbe700.bsky.social · 23/03/2025
"Two conditions are required for cooperation to evolve. First, the benefits to the individuals involved have to outweigh the costs.... Second, there has to be a way for cheaters to be detected and excluded.." @oxfordunipress.bsky.social inquisitivebiologist.com/2025/03/23/b...
inquisitivebiologist.com
Book review – Selfish Genes to Social Beings: A Cooperative History of Life
Selfish Genes to Social Beings relies on a potent combination of human-interest stories, wit, and ingenious metaphors to convince you that cooperation is an important component driving evolution.
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David Kirchman @microbe700.bsky.social · 22/03/2025
Not all good news, but "..renewables generate 47% of the EU’s electricity in 2024. Coupled with the continent’s nuclear plants... carbon-free generators made 71% of Europe’s electricity last year, while fossil fuels produced 29%." @canarymedia.com www.canarymedia.com/articles/cle...
canarymedia.com
Three years into the Ukraine war, is Europe’s energy system cleaner?
In response to the invasion, Europe mostly ditched Russian fossil fuels and built a cleaner grid. But wholesale decarbonization has proven elusive.
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David Kirchman @microbe700.bsky.social · 18/03/2025
This absorbing essay combines history, geology, politics and current environmental science to explore the nutrient pollution carried by the Red River from several US states to Lake Winnipeg and eventually the Arctic. @theswinerepublic.bsky.social Seeing Red open.substack.com/pub/riverrac...
open.substack.com
Seeing Red
And...what do Abe Lincoln and walleye fishing have in common?
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David Kirchman @microbe700.bsky.social · 14/03/2025
"An unprecedented streak of ocean heat since 2023 led some scientists to think that this part of Earth’s system has fundamentally changed in a way that it cannot be reversed on a human timescale." @washingtonpost.com @kashapatel.bsky.social www.washingtonpost.com/climate-envi...
washingtonpost.com
Global sea level rose higher than expected last year. Here’s why.
The rate of global sea level rise follows a trend of rapidly increasing rates over the past 30 years.
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David Kirchman @microbe700.bsky.social · 13/03/2025
Recent PNAS study concluded that microplastics are causing "a reduction in photosynthesis of 7 to 12 percent worldwide in plants and algae." As if there weren't enough reasons to reduce especially single-use plastic. @shannonosaka.bsky.social www.washingtonpost.com/climate-envi...
washingtonpost.com
How microplastics could be affecting our food supply
It’s a new sign of how the tiny plastic particles are affecting the natural world.
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David Kirchman @microbe700.bsky.social · 06/03/2025
First on the list for avoiding microplastics: drink tap water, not bottled water. "Researchers have found that an average liter of bottled water contains about 240,000 plastic particles.." #plastic @washingtonpost.com www.washingtonpost.com/climate-solu...
washingtonpost.com
How to eat and drink fewer microplastics
Scientists are finding microplastics throughout the human body. Here are some simple strategies to reduce your exposure.
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David Kirchman @microbe700.bsky.social · 05/03/2025
"The new data revealed a striking spike in marine lead pollution about 2,150 years ago. That’s around the time when... what is now Greece [was] being incorporated into the Roman Republic.." #lead #pollution @eos.org @elisecutts.bsky.social eos.org/articles/anc...
eos.org
Ancient Greeks and Romans Laced the Aegean with Lead - Eos
Lead pollution in and around the Aegean Sea dates back to the Bronze Age and shows a strong spike associated with Roman expansion.
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David Kirchman @microbe700.bsky.social · 04/03/2025
"GMOs are likely fine for adults to consume, especially if you minimize ultra-processed foods... For pregnant women and young children, it would be very reasonable to minimize consuming GMOs and ultra-processed foods whenever possible." @washingtonpost.com www.washingtonpost.com/wellness/202...
washingtonpost.com
Column | Are GMOs bad for your health? Here’s what the science says.
There’s nothing inherently unsafe about genetically modified foods. It’s the potential herbicide exposure that should give you pause.
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David Kirchman @microbe700.bsky.social · 26/02/2025
If not for plants, atmospheric carbon dioxide would be about 30% higher, so any reduction in their carbon consumption is really bad news for the climate. We'll see if this finding is confirmed by others. @theguardian.com www.theguardian.com/science/2025...
theguardian.com
Plants losing appetite for carbon dioxide amid effects of warming climate
Earth’s plants and soils reached peak carbon dioxide sequestration in 2008 but proportion absorbed has been declining since, study finds
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Reposted by David Kirchman
Nature Portfolio @natureportfolio.nature.com · 21/02/2025
A study in Nature finds that, since 2000, glaciers have lost between 2% and 39% of their ice regionally and about 5% globally. go.nature.com/3Qz4Tj7 🧪
This is figure 1, which shows global glacier mass changes from 2000 to 2023.
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David Kirchman @microbe700.bsky.social · 21/02/2025
A great piece about (mostly) new agricultural practices that not only save farmers money but help save the planet. @danamilbank.bsky.social www.washingtonpost.com/opinions/202...
washingtonpost.com
Opinion | After 10,000 years, let’s bury the plow
No-till farming reduces need for fertilizers and pesticides, and promotes soil health and biodiversity.
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David Kirchman @microbe700.bsky.social · 17/02/2025
The Inquisitive Biologist here reviews the second of two recent biographies of Alexander Humboldt. Inquisitive Biologist always has great reviews of books covering ecology, evolution, and many other biological sciences. @princetonupress.bsky.social inquisitivebiologist.com/2025/02/11/b...
inquisitivebiologist.com
Book review – Alexander von Humboldt: A Concise Biography
This admirably concise biography offers a factual and nuanced picture of Humboldt’s life and work, and critically interrogates previous portrayals.
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David Kirchman @microbe700.bsky.social · 16/02/2025
A shout out to "Predictive Ecology, "Don Boesch’s forthcoming history of the University of Maryland Center for Environmental Science @chesapeakebay.bsky.social www.bayjournal.com/columns/ches...
bayjournal.com
A century of Bay research at the University of Maryland
Formal Chesapeake Bay science began a century ago with the study of oysters from an 8x10 fisherman’s shack near the mouth of southern Maryland’s Patuxent River.
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David Kirchman @microbe700.bsky.social · 05/02/2025
“While Hansen et al are on the high end of available estimates, we cannot say with any confidence that they are wrong [about the 2C target being dead], rather that they just represent something closer to a worst-case outcome.” @climatenews.bsky.social www.theguardian.com/environment/...
theguardian.com
Climate change target of 2C is ‘dead’, says renowned climate scientist
Prof James Hansen says pace of global heating has been significantly underestimated, though other scientists disagree
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David Kirchman @microbe700.bsky.social · 04/02/2025
www.theguardian.com/environment/...
theguardian.com
Greenland ice sheet cracking more rapidly than ever, study shows
Crevasses increasing in size and depth in response to climate breakdown, Durham University researchers find
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David Kirchman @microbe700.bsky.social · 23/01/2025
A bit of good news. www.theguardian.com/world/2025/j...
theguardian.com
‘Rising star’: EU made more electricity from solar than coal in 2024
Report reveals solar power generated 11% of bloc’s electricity, surpassing coal at 10%
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David Kirchman @microbe700.bsky.social · 11/01/2025
"“They should not be dumping anything into the ocean,” said Beth Casoni, executive director of the Massachusetts Lobstermen’s Association, adding that she is skeptical of “the notion that you can alkalize the ocean like the pool in your backyard.” www.washingtonpost.com/climate-solu...
washingtonpost.com
How an antacid for the ocean could cool the Earth
A new technology promises to remove carbon from the atmosphere and prevent ocean acidification.
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David Kirchman @microbe700.bsky.social · 10/01/2025
"In contrast, it would take someone from the world’s poorest 50% three years to create the same amount of pollution." www.theguardian.com/environment/...
theguardian.com
World’s richest use up their fair share of 2025 carbon budget in 10 days
Emissions caused by wealthiest 1% so far this year would take someone from poorest 50% three years to create
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David Kirchman @microbe700.bsky.social · 07/01/2025
New journal, Sustainable Microbiology, just published its first issue. Why? Microbes "degrade and recycle the results of human activity; they are essential to achieve global food security and their activity is known to influence global climate processes." academic.oup.com/sumbio/artic...
academic.oup.com
Announcing sustainable microbiology: How microbes make a sustainable world
Microorganisms are at the very heart of sustainability. In their very basic form, microorganisms could be considered as small bags of enzymes able to respo
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David Kirchman @microbe700.bsky.social · 30/12/2024
"Our results support the USA–Canada Great Lakes Water Quality Agreement recommendation of a 40% P reduction, but also indicate that a parallel reduction of N input by 40% would be most effective in controlling bloom magnitudes." #eutrophication aslopubs.onlinelibrary.wiley.com/doi/abs/10.1...
aslopubs.onlinelibrary.wiley.com
Dual phosphorus and nitrogen nutrient reduction will be more effective than a phosphorus‐only reduction in mitigating diatom and cyanobacterial blooms in Lake Erie, USA–Canada
Lake Erie, USA–Canada, plays an important ecological and socioeconomic role but has suffered from chronic eutrophication. In particular, western Lake Erie (WLE) is the site of harmful algal blooms (H...
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David Kirchman @microbe700.bsky.social · 28/12/2024
The coal-fired power plant near where I live is shutting down two years sooner than planned, making Delaware only the 6th state without the dirtiest way to generate energy. www.delawareonline.com/story/money/...
delawareonline.com
Indian River Power Plant to shut down two years ahead of schedule. Here are the details
The Indian River Power Plant will retire two years ahead of schedule.
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David Kirchman @microbe700.bsky.social · 27/12/2024
"Direct interventions include the introduction of microbial strains, consortia, phage, and soil transplants, whereas indirect interventions include managing soil conditions or additives..." journals.asm.org/doi/full/10....
journals.asm.org
Soil microbiome interventions for carbon sequestration and climate mitigation | mSystems
Climate change poses one of the greatest challenges of the 21st century, demanding innovative and effective solutions across all sectors of society. Among the various strategies, soil microbiome inter...
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David Kirchman @microbe700.bsky.social · 13/12/2024
There's a faculty position in coastal microbial ecology open at the Alfred Wegener Institute Helmholtz Centre For further information please contact Dr. Antje Wichels (antje.wichels@awi.de), Dr. Gunnar Gerdts (gunnar.gerdts@awi.de), or Dr. Cédric Meunier (cedric.meunier@awi.de).
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David Kirchman @microbe700.bsky.social · 08/12/2024
"'A Sand County Almanac was born in a dark time and under tragic circumstances. Written in the aftermath of World War II, when ferocious new technologies were unleashed and open space was gobbled up by automation.." Leopold died when he was 61. www.washingtonpost.com/books/2024/1...
washingtonpost.com
Review | ‘A Sand County Almanac’ remains an environmental classic at 75
Aldo Leopold’s book is a landmark of both nature writing and American philosophical thought.
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David Kirchman @microbe700.bsky.social · 07/12/2024
Doug Tallmy has pushed for the use of native plants in lawns and backyards to promote biodiversity as part of his Homegrown National Park initiative. www.udel.edu/udaily/2024/...
udel.edu
Paradise restored | UDaily
Doug Tallamy's quest to save the world, one yard at a time
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David Kirchman @microbe700.bsky.social · 05/12/2024
Chris Jones (@theswinerepublic.bsky.social ) has just put out a fascinating short history of water use in Iowa. "Fascinating" if viewed from outside of Iowa, troubling if you live in the state and have the drink the stuff. riverraccoon.substack.com/p/well-drain...
riverraccoon.substack.com
Well, drained.
Finally, the end of a sad chapter for Iowa agriculture
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David Kirchman @microbe700.bsky.social · 01/12/2024
www.science.org/content/arti...
science.org
Like ‘old Twitter’: The scientific community finds a new home on Bluesky
After recent changes to Elon Musk’s X, a gradual migration turns into a stampede
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David Kirchman @microbe700.bsky.social · 28/11/2024
This paper argues using microbes to combat climate change. www.nature.com/articles/s41...
nature.com
Microbial solutions must be deployed against climate catastrophe - Nature Microbiology
This paper is a call to action. By publishing concurrently across journals like an emergency bulletin, we are not merely making a plea for awareness about climate change. Instead, we are demanding imm...
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Reposted by David Kirchman
Ferris Jabr @ferrisjabr.bsky.social · 27/11/2024
I was deeply disappointed by the lack of nature/science/climate/enviro on many major end-of-year book lists—so I decided to make my own! Introducing: ✨🎁📚 The 2024 Holiday Gift Guide to Nature & Science Books ✨🎁📚 Please share: Let's make this go viral in time for Black Friday / holiday shopping!
A collage of book covers of new nature & science books. Featured here are Atlas Obscura Wild Life, Dinosaurs at the Dinner Party, Every Living Thing, Alien Earths, Becoming Earth, and Deep WaterA collage of book covers of new nature & science books. Featured here are Frostbite, The Inner Clock, How to Kill an Asteroid, The Great River, The Last Fire Season, and Hoof BeatsA collage of book covers of new nature & science books. Featured here are The Serviceberry, Not the End of the World, Nature's Ghosts, Meet the Neighbors, The Light Eaters, and Our MoonA collage of book covers of new nature & science books. Featured here are Turning to Stone, The Weight of Nature, What If We Get It Right?, Waves in An Impossible Sea, The Tree Collectors, and Why We Remember
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