A company called Roofscapes has installed an experimental green roof over a zinc one at the Academy of Climate in Paris. A wooden platform, dotted with planters, runs along the building’s side, creating a terrace.

The Skyline of Paris Is Filled With Zinc Rooftops. But Can They Survive Climate Change?

Innovations are overdue, as the signature blue-gray metal roofs heat up in high temperatures, making living conditions in the apartments beneath them unbearable

A camera trap image of El Jefe, a male jaguar who made international news as the only known jaguar in the United States.

How El Jefe, the Lone Arizona Jaguar Who Captivated a Nation in 2016, Became a ‘Rock Star’

Once called “America’s last jaguar,” the solitary male wandered across the southern border in 2011 and became the centerpiece of a campaign to protect habitat in the Santa Rita Mountains

Some computer vision programs have been thrown off by tricks such as manipulating the pixels in an image.

Computers Are Getting Much Better at Image Recognition

The machine-learning programs that underpin their ability to “see” still have blind spots—but not for much longer

Gloria Acevedo, a diver with the Sirenas de Oriente in Mexico, removes a fishing line from coral near Cozumel Island.

‘Ghost Gear,’ or Abandoned Fishing Equipment, Is Haunting the Oceans. Here’s How Conservationists Are Fighting Back

Discarded nets, lines and traps are a hazard to marine life and ecosystems around the world, but pioneering programs are tackling the problem creatively through education, prevention, ocean cleanups and recycling

The skin of the three-striped poison dart frog, Ameerega trivittata, contains a cocktail of lethal toxins that interfere with the function of key cell proteins. That’s a challenge for any prospective predator.

These Animals Eat Poisons and Don’t Die. Some Even Become Toxic in Turn

Critters consuming species that harbor deadly toxins have evolved a suite of clever strategies to keep out of harm’s way. Scientists are starting to unravel how these protections work on the molecular level

Ian and Stuart Paton pose with their world record pumpkin, nicknamed Muggle. The pumpkin weighs 2,819.3 pounds.

The Giant Pumpkin World Record Just Crept Closer to 3,000 Pounds. Here’s How Science, Sweat and ‘Soul Crush’ Keep Growers Reaching for the Heaviest Fruit Possible

Twin brothers in the United Kingdom grew the biggest pumpkin ever documented, tipping the scales at 2,819.3 pounds

Horseshoe crabs evolved 445 million years ago and have been around for 1,500 times longer than Homo sapiens. It was not until the 20th century, however, that scientists discovered life-saving properties in their blood.

Horseshoe Crab Blood Has Long Helped Us Make Safe Medicines. Now, Alternatives That Spare the Ancient Creatures Might Be Breaking Through

An enzyme in the blue blood has been key to testing vaccines since the 1980s, raising concerns for the crabs’ population. But regulatory approval and new data are signaling the tide may be turning

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Birds, Bats and Bugs: The Teeming World Above Our Heads

Researchers are finally able to catch a glimpse of the life filling the skies, and they want to protect it

Navigating based on natural signs, writes Tristan Gooley, “sharpens our powers of observation, deduction and prediction.”

It’s Almost Impossible for Tristan Gooley to Get Lost. That’s One Reason He Has Millions of Followers

The British adventurer has crossed the Atlantic solo in a plane and a boat. Now he reads tree leaves, puddles and moss to get his bearings

Isaque Carvalho Borges won $12,500 in the Central and South American category of the 2025 Earth Prize, the world’s largest environmental sustainability competition for students between 13 and 19 years of age.

This 16-Year-Old Invented an A.I. Tool to Help Cool Down the World’s Hottest Cities

Isaque Carvalho Borges experiences the urban heat island effect in his home of Palmas, Brazil, and he wants to do something about it

The Pleiades, also known as the “Seven Sisters,” is an open star cluster in the constellation Taurus. Because of its visibility to the naked eye, it has appeared in literature and cultures across time.

A Brief and Amazing History of the Pleiades, Stars That Captivated Ancient Civilizations and Inspired Poets

Also known as the “Seven Sisters,” the striking cluster has long been used as an important seasonal marker and appears high in the night sky around Halloween

Sea otters use their agile, grippy forepaws to capture and pull apart prey. Raising their paws and back flippers out of the water also helps them stay warm.

Sea Otters May Be Small Marine Mammals, But Their Effect on an Ecosystem Can Be Huge

Their fur is so soft it almost led to their extinction, but otters’ recovery has been a boon to Pacific kelp forests, a key habitat for other sealife

What made the U.S. Post Office Department decide to start its airmail service so early, before air travel was even common?

Why Did the U.S. Post Office Start Airmail So Early? And More Questions From Our Readers

You’ve got questions. We’ve got experts

An aerial view of Altadena on March 11, 2025, shows surviving trees and new greenery amid homes destroyed in the Eaton Fire.

After the L.A. Fires, Locals Turn to Native Plants to Help Shield Homes From Flames and Clean Contaminated Soil

Scientists and community members in Altadena are testing ways that California species can assist efforts to rebuild

Postpartum depression affects some one in eight women in the United States. It typically occurs in the first weeks after childbirth, after a sudden drop in levels of estrogen and progesterone.

A Blood Test Can Now Predict a Mother’s Risk of Postpartum Depression

Scientists are learning more about this leading complication of childbirth, and treatments are improving

Camels evolved into a range of shapes and sizes, including small forms like these Stenomylus on display at the American Museum of Natural History.

Meet the Extinct Camels of North America, From Ice Age Giants to Sheep-Size Runners

Largely outshone by fossils of horses, the earliest camels are getting another look from scientists determined to sort out the relationships and adaptations of these “absolutely bonkers” herbivores

A dusky shark swims in the Mediterranean Sea off the coast of Hadera, Israel, where dusky sharks and sandbar sharks tend to gather.

Why Do Sharks Go Into Feeding Frenzies? A Case Study of a Recent, Unusual Attack on a Human Looks for Answers

After multiple dusky sharks killed a swimmer off Israel’s coast this year, scientists investigated what might have triggered the attack in hopes of preventing similar incidents

These six keel-billed toucans were discovered bound and sedated in June by U.S. Customs and Border Protection officials. The Wildlife Confiscations Network helped find experts at qualified facilities to care for the birds.

Once Smuggled Animals Are Rescued, Law Enforcement Officers Call Her

As coordinator of the Wildlife Confiscations Network, Mandy Fischer helps match trafficked animals—from alligators to jaguars to baby monkeys—with sanctuaries and care facilities

The earwig’s delicate, paper-thin wings open to more than ten times their folded size, thanks to its origami-like creases.

Studying Clever Creases in Nature May Inspire Foldable Structures for Drones and Robots

Engineers are turning to animal origami, from insects that tuck away wings to a protist with an accordion-like neck, for design help

The epigenetic clock is emerging as a wildlife conservation tool.

This ‘Clock’ Could Warn of Hidden Stresses to Animals, Offering a Long-Sought Signal That a Population Is Nearing Collapse

The epigenetic clock measures biological age and could help scientists assess the health of polar bears, dolphins, baboons and other threatened creatures “while recovery is still possible”

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