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Christina Applegate says she was misdiagnosed with MS—how could that happen?

The Emmy Award–winning actress revealed that a multiple sclerosis diagnosis in 2021 was incorrect. It's a surprisingly common experience, experts say

The Overlapping Plagues Quietly Devastating American Forests

Trees are suffering one devastating epidemic after another, unleashed by insects and bacteria that enter the country because of global trade.

How Did Life Arise? Three Turning Points in Early Evolution

WILLIAM J. BROAD, KENNETH CHANG AND CARL ZIMMER

Where did it start? How did it grow complex? Why did it get big? Three moments in Earth’s early history when evolution suddenly, inexplicably turned up the dial.

Republican congressional candidate Tom Stalcup on how both parties abuse science for political gain

Scientific American spoke to the candidate for Massachusetts's fourth congressional district about climate change, misinformation and why, when it comes to health care, some socialism may be required

A Wall Is Also a Road explores alien consciousness, slime mold life-forms and Pompeii

 Slime mold aliens explore Pompeii—and humanity—in a new book by Annalee Newitz

Is Rabies Making a Comeback?

EMILY ANTHES

As several states report surges in animal cases, federal officials are warning about an apparent increase in human exposures.

SpaceX Swings to a Profit, as A.I. Business Grows

RYAN MAC AND KATE CONGER

Elon Musk’s rocket company said its artificial intelligence spending had soared, but revenue more than doubled from its Starlink internet satellite service and A.I. products.

Super Typhoon Champi sets the record for strongest storm of 2026

The cyclone's winds hit 185 miles per hour—the strongest windspeed of any storm this year

See the Orionids meteor shower at its peak this week

The shower's shooting stars originate from Halley's Comet

Report pinpoints future exploration sites on the moon

Besides building crewed outposts at the lunar south pole, where else should astronauts go on the moon? An authoritative new report has suggestions

Physicists trap a single antimatter particle for a month

For the first time, scientists can make quantum measurements on a positron particle

How to Catch the Orionids, a Meteor Shower From Halley’s Comet

KATRINA MILLER

It’s a fall favorite among stargazers, known for bright, speedy streaks that can sometimes linger in the sky for minutes.

National Science Foundation leader Brian Stone to retire with no clear replacement in sight

President Donald Trump's nominee to replace Stone, James O'Neill, has yet to have a confirmation hearing in the senate, leaving the future leadership of the NSF unclear

C.D.C. Ignored Request From States to Validate a New Measles Test

APOORVA MANDAVILLI

The agency replied two months later, saying it had “competing priorities,” officials from a coalition of Western states said.

Why Drug Companies Are Rushing to Market Ketamine Medicines

ANDREW JACOBS

Spurred on by the Trump administration’s embrace of psychedelic medicine, researchers are experimenting with new — and not so new — forms of the anesthetic.