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Gray whales are washing up dead on the West Coast. The reason is alarming

Up and down the Pacific coast, dead gray whales are mysteriously washing ashore—and scientists think they know why

SpaceXAI’s Colossus data center is fueling a massive backlash

Dozens of temporary gas turbines are powering SpaceXAI's expansion—and fights over permits and pollution

Scientists unlock new clues to what Denisovans, a mysterious ancient human ancestor, looked like

An analysis of ancient bones found in a Chinese cave offer glimpses of how Denisovans lived more than 130,000 years ago

New maps reveal hidden landscapes inside a prehistoric supercontinent

Gondwana was much bigger than we thought, according to the new analysis

Astronomers reveal a new type of celestial object that has been hiding in plain sight for decades

It's unclear what these objects actually are, but evidence for them has been detected by NASA's Chandra space telescope for years

The Heart Drug Pelacarsen Fails, Shocking Novartis and Cardiologists

GINA KOLATA

Doctors were hopeful the drug, which was being tested in a large clinical trial by Novartis, was going to be a powerful new tool to fight heart disease.

A New Drug Lifts the Fog of Sleepiness for Those With Narcolepsy

CAROLYN Y. JOHNSON

The first-of-its-kind drug offers a reprieve for people who live with the debilitating sleep disorder.

Toxic PFAS Cleanups at Military Sites Face Decades of Delay

HIROKO TABUCHI

The Pentagon has again postponed PFAS cleanups at hundreds of military sites, in some cases up to 19 years, prompting bipartisan anger in Congress.

Scientists Discover the Earliest Evidence of Drug Use in Really Old Teeth

BECKY FERREIRA

A hunter-gatherer who lived in Indonesia as early as 25,000 years ago may have regularly sucked on betel nuts to release their psychoactive properties.

States File 2 Lawsuits Over Trump’s Cuts to Endangered Species Act

MAXINE JOSELOW

Two lawsuits seek to reverse the Trump administration’s moves to open the habitats of imperiled wildlife to commercial activities.

August 2026 ties for hottest month ever recorded

The looming El Niño conditions, combined with the warming effects of climate change, contributed to the historic temperatures

The Pacific is being beset by hurricane after hurricane—why is the Atlantic so quiet?

The Pacific Ocean has seen an especially active hurricane season so far, while the Atlantic has had barely a whimper of a storm. Experts explain why

The planet Mercury is shrinking far faster than we thought

The planet's "wrinkles" give scientists a clue into how the world is contracting in size

Indonesian volcano erupts with enough force to see from space

NASA's satellites captured the aftermath of the eruption, which lasted for more than a day

Mathematicians confront the AI apocalypse

What happens when machines surpass the most brilliant human minds? Mathematicians are finding out