Science

Greenland’s Rock Flour

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Guardian graphic. Source: Guardian research

Damian Carrington, Environment editor at the Guardian, shares these findings:

Eight-thousand-year-old marine deposits, exposed by the slow rise of Greenland after the last ice age. The cliffs are about 15 metres high. Photograph: Minik Rosing

Rock ‘flour’ from Greenland can capture significant CO2, study shows

Powder produced by ice sheets could be used to help tackle climate crisis when spread on farm fields

Rock “flour” produced by the grinding under Greenland’s glaciers can trap climate-heating carbon dioxide when spread on farm fields, research has shown for the first time.

Natural chemical reactions break down the rock powder and lead to CO2 from the air being fixed in new carbonate minerals. Continue reading →

Out With PFAS, Considering Alternatives

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PFAS are used as a coating on food packaging and are prevalent in other everyday items like personal care products and textiles.

Triple Pundit, and writer Riya Anne Polcastro, are new to us, and we appreciate their coverage of this complex topic, important both for health and environmental reasons:

Nixing PFAS is a Real Possibility: Here’s One Company That’s Doing It

Per- and polyfluorinated substances (PFAS) have been getting a lot of negative publicity. And with good reason. Classified as “forever chemicals,” they’ve been found in food, water, soil, animals and even our blood. Although the extent of their effects is not fully understood, they are known to negatively impact human health in a variety of ways. But while many are calling for an overall ban on the chemicals, pushback from the industry seeks to simply switch out the PFAS we already know are harmful with lesser-known ones that likely have the same — or possibly even worse — effects. Continue reading →

Think, While You Can, About The Processed Foods You Eat

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Jess Ebsworth

The groceries we shop for, even with the finer shopping options, sometimes disappoint; but some foods are just plain wrong, as this article by Sally Wadyka in the New York Times explains:

The Link Between Highly Processed Foods and Brain Health

Eating packaged foods like cereal and frozen meals has been associated with anxiety, depression and cognitive decline. Scientists are still piecing together why.

Roughly 60 percent of the calories in the average American diet come from highly processed foods. Continue reading →

Natural History Anew

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An image from 1957, when the cross and square design was still legible. American Museum of Natural History

We have featured so many natural history museums in our pages over the years that one more might have been redundant; but no:

A new aerial photo shows the museum today, as a crazy quilt of buildings from many eras, with Gilder on the right. Iwan Baan

The article below, by Michael Kimmelman with photographs and video by Peter Fisher, allows us to imagine the experience of a new view on natural history in New York City.

The view at the entrance toward the monumental staircase with bleacher seats.

We are ready to be awed:

The stunning $465 million Richard Gilder Center for Science, designed like a canyon, is destined to become a colossal attraction.

When plans for it first surfaced, I wondered if the new Gilder Center at the Natural History museum might end up looking overcooked.

From the outside it’s a white-pink granite cliff with yawning windows shaped a little like the openings to caves, nestling the museum’s wonderful Romanesque Revival addition from the turn of the last century. Past the front doors, that cliff face morphs. It becomes an atrium in the guise of a towering canyon, a city block deep.

Skylights and balconies in the atrium of the new Richard Gilder Center for Science, Education and Innovation.

For its architects, Jeanne Gang and her team, Gilder was clearly a gamble and leap of faith, bucking today’s innocuous norms, almost begging for charges of starchitectural self-indulgence.

Now that it’s built, I love it.

I wouldn’t go so far as to equate it with the curvaceous genius of Gaudi or with Saarinen’s groovy TWA Terminal, but it’s in the family. Like them, Gilder is spectacular: a poetic, joyful, theatrical work of public architecture and a highly sophisticated flight of sculptural fantasy. New Yorkers live to grouse about new buildings. This one seems destined to be an instant heartthrob and colossal attraction. Continue reading →

Anthropocene’s Marker

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The Ediacaran Period, which ended some 540 million years ago, is marked by a gold spike in the Flinders Ranges of South Australia. JAMES ST. JOHN

We do not love the word Anthropocene, but we appreciate the marker it represents. And until now we did not know there would be a physical counterpart, a marker that will be placed in a representative location:

A Golden Spike Would Mark the Earth’s Next Epoch: But Where?

Before the Anthropocene can be officially proclaimed, a scientific working group must select a single site that permanently captures the new human-influenced epoch. Nine candidate sites — from California to China to Antarctica — are under consideration, with a decision expected soon.

The peatland below Poland’s Mount Śnieżka contains contaminants from burning fossil fuels, nuclear testing, and other human activities. MYSTICWALKER / ALAMY STOCK PHOTO

At first glance, these nine sites scattered across the globe seem unremarkable. Continue reading →

The Secret Perfume Of Birds, Reviewed By The Inquisitive Biologist

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The Inquisitive Biologist recently came to our attention with a book review, and now another review of a book on a topic that is new (to us):

To successfully navigate their world, organisms rely on numerous senses. Birds are no exception to this; and yet, for a long time, people have been convinced that birds cannot smell. This came as a surprise to evolutionary biologist Danielle J. Whittaker. Given that smell is effectively chemoreception (the sensing of chemical gradients in your environment) and was one of the first senses to evolve, why would birds have no use for it? The Secret Perfume of Birds tells the story of 15 years spent investigating the olfactory capabilities of birds and provides an insider’s account of scientific research. Continue reading →

More Metrics For Animal Intelligence

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(Credit: Viesinsh/Shutterstock)

We appreciate Conor Feehly’s article in Discover, expanding our understanding of and ability to measure the intelligence of our co-inhabitants on this planet:

How Intelligence Is Measured In The Animal Kingdom

As understandings of human intelligence evolve, so, too, do understandings of animal intelligence.

Human beings — with our big brains, technology and mastery of language — like to describe ourselves as the most intelligent species. After all, we’re capable of reaching space, prolonging our lives and understanding the world around us. Over time, however, our understanding of intelligence has gotten a little more complicated. Continue reading →

Ozone Progress

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A refrigerator factory in 2018 in Xingfu, China, an area that defied restrictions on ozone-depleting CFC-11 until a government crackdown. Gilles Sabrié for The New York Times

Any time we see even the slightest sign of meaningful change, it is worth pausing, noting it, and getting back to work:

Rogue emissions from China of ozone-depleting chemicals had threatened to delay recovery by a decade. But the emissions were stopped, according to a U.N.-backed report.

The protective ozone layer in the upper atmosphere could be restored within several decades, scientists said Monday, as recent rogue emissions of ozone-depleting chemicals from China have been largely eliminated. Continue reading →

Lungs Of The Earth, The Amazon Calls Our Attention Again

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Illustration by Max Guther

The Amazon is one of those big topics that we come back to again and again for a reason.  We all depend on these lungs of the earth, so it would be strange to not be obsessed with the subject:

Some Brazilian scientists fear that the Amazon may become a grassy savanna — with profound effects on the climate worldwide.

Illustration by Max Guther

One of the first times Luciana Vanni Gatti tried to collect Amazonian air she got so woozy that she couldn’t even operate the controls. An atmospheric chemist, she wanted to measure the concentration of carbon high above the rainforest. To obtain her samples she had to train bush pilots at obscure air-taxi businesses. The discomfort began as she waited on the tarmac, holding one door open against the wind to keep the tiny cockpit from turning into an oven in the equatorial sun. When at last they took off, they rose precipitously, and every time they plunged into a cloud, the plane seemed to be, in Gatti’s words, sambando — dancing the samba. Then the air temperature dipped below freezing, and her sweat turned cold. Continue reading →

Embracing Anthropocene

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Image credits: Alamy; David Guttenfelder for The New York Times; Getty Images; Ashley Gilbertson for The New York Times; Michael Probst/Associated Press; Getty Images; NASA

We have been using this terminology already for more than a decade, thinking it was apt enough to be official:

For Planet Earth, This Might Be the Start of a New Age

A panel of experts has spent more than a decade deliberating on how, and whether, to mark a momentous new epoch in geologic time: our own.

The official timeline of Earth’s history — from the oldest rocks to the‌ dinosaurs to the rise of primates, from the Paleozoic to the Jurassic and all points before and since — could soon include the age of nuclear weapons, human-caused climate change and the proliferation of plastics, garbage and concrete across the planet. Continue reading →

Fusion Hoopla

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A reason that the breakthrough is causing such hoopla is that it implicitly promises that we could use fusion to run the world in almost its current form. Photograph courtesy Lawrence Livermore National Laboratory

Without the expertise to fully appreciate the science, the hoopla can be overlooked too easily. McKibben’s comment helps clarify:

The Fusion Breakthrough Suggests That Maybe Someday We’ll Have a Second Sun

In the meantime, we need to use the sun we’ve already got.

On Tuesday, the Department of Energy is expected to announce a breakthrough in fusion energy: according to early reports, scientists at the government’s Lawrence Livermore National Laboratory, in California, have succeeded for the first time in making their complex and expensive machinery produce more power than it uses, if only for an instant. Continue reading →

Huxley’s Extra Effort

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A family of scientist-writers recast religion and ethics in light of evolution. Illustration by Melinda Beck

We are all fortunate that the Huxley family produced no slouches:

How the Huxleys Electrified Evolution

Defending Darwinism from both clerical and scientific opponents, T. H. Huxley and his grandson Julian shaped how we think about the past and future of our species.

Thomas Henry Huxley almost skipped the showdown of his life. It was the fourth day of the 1860 meeting of the British Association for the Advancement of Science. He was tired. Continue reading →

New Fracking Science

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A shale gas drilling rig in St. Marys, Pennsylvania. AP PHOTO / KEITH SRAKOCIC

We thought the science of fracking’s dangers was already sufficiently clear, and now this (read Jon Hurdle’s entire story at Yale e360):

As Evidence Mounts, New Concerns About Fracking and Health

Two decades after the advent of fracking, a growing number of studies are pointing to a link between gas wells and health problems, particularly among children and the elderly. Researchers are now calling for new regulations restricting where wells can be located.

Almost 20 years after the adoption of hydraulic fracturing began to supercharge U.S. production of oil and gas, there’s growing evidence of a correlation between the industry’s activities and an array of health problems ranging from childhood cancer and the premature death of elderly people to respiratory issues and endocrine disruption. Continue reading →

Blue Carbon Collaboration

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Scientists fixed bio-logger tags equipped with cameras on tiger sharks in the Bahamas to map the ocean’s seagrass meadows. Photograph: Diego Camejo/Beneath the Waves

We thank Laura Paddison for this underwater news, published in the Guardian, that has implication for climate change mitigation:

Scientists discover ‘world’s largest’ seagrass forest – by strapping cameras to sharks

New study, carried out using tiger sharks in the Bahamas, extends total known global seagrass coverage by more than 40%

Tiger sharks are notoriously fierce. The huge animals, which can grow to more than 16ft, are ruthless predators and scared of absolutely nothing – recent research found that while other shark species fled coastal waters during strong storms, tiger sharks “didn’t even flinch”.

But recently they have a new role that could help burnish their reputations: marine scientists. Continue reading →

Tagging Technology Gives Godwit Game

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A juvenile bar-tailed godwit has flown from Alaska in the US to Tasmania in Australia, covering a record 13,560kms without stopping. Photograph: Johnny Madsen/Alamy

Who’s got game in the bird world is not, strictly speaking, a phrase associated with ornithologists or what they do for a living. But sometimes, their news features what looks like competitive sport to the lay public. We have shared news of long-journey bird species on several occasions, and one that has the right stuff now stands out from the rest by virtue of tagging technology:

Bar-tailed godwit sets world record with 13,560km continuous flight from Alaska to southern Australia

Satellite tag data suggests five-month-old migratory bird did not stop during voyage which took 11 days and one hour to reach Tasmania

A juvenile bar-tailed godwit – known only by its satellite tag number 234684 – has flown 13,560 kilometres from Alaska to the Australian state of Tasmania without stopping, appearing to set a new world record for marathon bird flights. Continue reading →

Tree Core Samples & Age Estimations

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Tree cores Harvard Forest

Core samples may hold clues to a forest’s response to climate change. Photos by Stephanie Mitchell/Harvard Staff Photographer

Juan Siliezar, staff writer for the Harvard Gazette asks and answers a question that we never tire of:

Want to know how cold it was in 1490? Ask a tree

Harvard Forest Senior Ecologist Neil Pederso

“We use tree cores to extract what I’ve been leaning toward calling the memory of the tree,” said Neil Pederson in the lab alongside core samples.

Sometimes getting to where you want to go is a matter of finding the right guide.

Four teams of researchers, led by Harvard Forest ecologists, searched for a patch of ancient trees deep in the woods of western Pennsylvania this summer as part of a project to study how climate changes affected trees over the centuries. One of the scientists had come across them 40 years earlier, but they appeared to have vanished. Just as the group was about to give up and move on they came across someone who gave them a valuable clue. Continue reading →

The New Climate War Book Tour Optimism

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If you are wondering where the hope comes from, read Eric Schwartzman’s article at Yale Climate Connections:

Climate scientist Michael E Mann PhD, author of The New Climate War signs his book for winemaker Ross Halleck of Halleck Vineyard in Sonoma County, California.

Scientist Michael Mann expresses hope during West Coast book tour

University of Pennsylvania climate scientist says he remains optimistic despite daunting challenges and continued concerns about ‘false’ climate solutions.

CORTE MADERA, CALIFORNIA – Don’t believe the climate crisis doomsayers: We can still achieve a 50% reduction in carbon emissions by 2030. But we have to elect lawmakers with the political will to enact meaningful climate legislation. The atmosphere is warming significantly, just as Exxon Mobil scientists were predicting back in 1982. Continue reading →

Elephant Seals & Marine Sciences

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Thanks to Sierra for this:

When Elephant Seals Become Ocean Researchers

Marine mammals unlock the secrets of climate and the Arctic

By Kate Golden

Illustrations by Masha Foya

ON A FEBRUARY MORNING at Año Nuevo Reserve on the coast of Northern California, hundreds of gray-brown elephant seals lay strewn, lumplike, all over the beach. It was hard to hear anything over the honks and shrieks of status jockeying and sex dramas. The north wind gusted to 35 knots and blew a river of fine sand into everyone’s faces. At a dense seal cluster near the water, researchers and students from the University of California, Santa Cruz, knelt over an 815-pound female whose stern had been labeled “X1” with Clairol bleach. Continue reading →

On Those 20 Quadrillion+ Ants, Again

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Ants in Escazu

The earthworm in the photo above had been in a bag of soil where a coffee seedling started germinating earlier this year. I was moving the seedling from its small “starter” bag to a larger one, and the earthworm jumped out, wriggling under the nearby supplies I was working with. I did not see it again until it was too late. Since earthworms are good for soil, and we are in the early stages of a soil regeneration project, I was sorry to see the worm lose its life. This particular species of ant is currently everywhere on the property where we are re-planting coffee. I have not seen so many of this type of ant at any point in the last 22 years on this property, and their shocking abundance made me think of that new ant study. Normally we do not repeat sharing of news stories here, unless new information has come to light. It has only been a couple days, but I must share more on the study because my planting work is keeping the subject in front of me, and the photos in this article are that good.

Leaf cutter ants in Costa Rica. The researchers sampled 1,300 locations around the world, estimating ant abundance in different environments in areas such as forests and steppes. Bence Mate/Nature Picture Library, via Alamy

Rebecca Dzombak, who authored this article for the New York Times, will be on our radar from now on:

Weaver ants engaged in teamwork. Sunthorn Viriyapan/Alamy

Counting the World’s Ants Requires a Lot of Zeros

There are 20 quadrillion ants worldwide, according to a new census, or 2.5 million for every living human. There are probably even more than that.

Male leaf cutter ants on the move over the Sonoran Desert in search of females and to make more ants. Norma Jean Gargasz/Alamy

Right now, ants are scurrying around every continent except Antarctica, doing the hard work of engineering ecosystems. They spread seeds, churn up soil and speed up decomposition. They forage and hunt and get eaten. You may not know how much you rely on them. Continue reading →

Ant Mass Calculation

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In this photo provided by the U.S. Fish and Wildlife Service, yellow crazy ants are seen in a bait testing efficacy trial at the Johnston Atoll National Wildlife Refuge in December, 2015. An invasive species known as the yellow crazy ant has been eradicated from the remote U.S. atoll in the Pacific. Robert Peck/AP

The mass of ants on earth is not a topic we have considered, but there is not too much surprise at reading this news:

The number of ants on Earth has a mass greater than all birds and mammals combined

For every human on Earth, there are estimated to be about 2.5 million ants — or 20 quadrillion in total.

A new study published by researchers at both the University of Hong Kong and University of Würzburg in Germany attempts to count the total number of ground-dwelling and tree-dwelling ants. Continue reading →