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Space weapons, AI safety concerns and the EPA’s rollback of power plant emission rules

From orbital weapons to AI risks and weaker emissions rules

COVID cases are on the rise—here’s how to stay healthy this winter

The virus is currently most prevalent in California and the southern U.S., but experts expect it to go national in the coming weeks

9 ‘boundaries’ keep Earth livable. We’ve breached 7 of them

Earth's annual checkup shows that we're at increasing risk of moving away from the environment we're adapted to

Did OpenAI solve the wrong Navier-Stokes problem?

OpenAI's proof seems eligible for a $1-million prize—but only by using a controversial loophole

What a Massive New Crater Means for Future Moon Bases

ROBIN GEORGE ANDREWS

At a whopping 728 feet wide, the newfound basin hints at the risks that impact events may pose to planned human outposts.

David George Gordon, Apostle for Bugs on the Dinner Plate, Dies at 76

MICHAEL S. ROSENWALD

His “The Eat-a-Bug Cookbook” made a case for insects as food, while his boisterous cooking demonstrations brought tarantulas and crickets to TV.

Are A.I. Models Being Misled to Act Too Human?

CADE METZ

A corporate spat between two tech giants last week was just the latest volley in a conflict over whether dangerous mistakes are being made in A.I. training.

What a Trump order to put political appointees in charge of NIH funding would mean for science

Advocates and scientists warn that giving political appointees power over research grants would "upend" U.S. science

Sadness and Suicidal Behavior Among Teenagers Is Declining, C.D.C. Finds

AZEEN GHORAYSHI

A national survey has found that key mental health measures for teenagers have significantly improved from their worst levels during the pandemic.

Judge Allows Transfer of Land in Wildlife Refuge to SpaceX, for Now

MAXINE JOSELOW

The ruling clears a path for a land swap deal that would expand Elon Musk’s Starbase launch site in South Texas.

NASA Goddard’s shrinking workforce could stifle future space missions, experts say

2025 was a brutal year of budget cuts and workforce attrition at NASA's Goddard Space Flight Center, the home base for the Nancy Grace Roman Space Telescope. Experts worry Goddard—and NASA's space science—may never recover

Mathematicians use AI to find mysterious symmetries, solving decades-old problem

In parallel, a race by amateurs and mathematicians has found all 25,000 cases of one "inverse Galois problem"

Mathematician reveals the truth behind the Parthenon’s optical illusion

The Parthenon sits atop a platform that is curved into a subtle hill shape that some say makes the structure appear straighter—but is that true?

This year’s El Niño just broke another sobering record

"This is probably going to be the superlative El Niño event of our lives so far," a climate scientist says

RFK, Jr., is focusing attention on electromagnetic fields. Here’s what the science says about exposure

The research into how electromagnetic waves and radio frequency radiation influence health has been plagued by low-quality studies