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A DAY AGO
Tennessee Valley Authority Gets Approval to Build Small Nuclear Reactor
It’s only the second time that American regulators have approved a next-generation commercial reactor for construction. Big hurdles remain.
- SCIENTIFIC AMERICANA DAY AGO

Blockbuster retatrutide trial signals a ‘new high-water mark’ for weight-loss drugs
The experimental weight-loss drug is a triple agonist and the first of its kind to reach a phase 3 clinical trial
2 DAYS AGO
SpaceX’s Starship Makes It to Orbit for the First Time, but Returns to Earth Early
The 14th test flight marks a crucial milestone toward the company’s ambitions of sending people to the moon and Mars, but it was not a complete success.
- SCIENTIFIC AMERICAN12 HOURS AGO

Why AI-powered romance scams are harder than ever to spot
How AI is transforming online romance scams, and what you can do to protect yourself
- SCIENTIFIC AMERICAN12 HOURS AGO

IVF ‘add-ons’ offer hope to parents desperate for a baby. But are they backed by science?
There's little evidence that many IVF "add-on" treatments work. Should they even be offered?
A DAY AGO
This Virus Stole a Human Gene and Won’t Let Go of It
Scientists have found a human gene lurking in a virus that causes skin infections. It may be using our own DNA to infect us.
- SCIENTIFIC AMERICAN4 HOURS AGO

NASA directive might increase the odds of contaminating Mars
The new push loosens U.S. regulations for sterilizing spacecraft bound for the Red Planet and calls for modernizing the science of "planetary protection"
- SCIENTIFIC AMERICAN5 HOURS AGO

The Atlantic hurricane season has been so quiet it’s unprecedented
El Niño has stymied storm formation even more than forecasters expected
- SCIENTIFIC AMERICAN20 HOURS AGO

Dangerous ozone threatened half of world’s population this year
This exposure reflects an intersection of climate change, air pollution and public health, says new analysis
- SCIENTIFIC AMERICAN9 HOURS AGO

AI solves a ‘holy grail’ problem from probability theory
Just days after a Fields Medalist predicted that an AI would solve the puzzle, Anthropic succeeded
- SCIENTIFIC AMERICAN7 HOURS AGO

Trump’s surgeon general nominee Nicole Saphier clears key Senate committee
Saphier's nomination now heads to the full Senate for a vote
- SCIENTIFIC AMERICAN6 HOURS AGO

Satellite images reveal ethereal auroral storm raging above the North Pole
The satellite, Smile, is a joint European and Chinese mission to study space weather and geomagnetic storms above Earth
- SCIENTIFIC AMERICANA DAY AGO

Strange things happen in four dimensions
Disorder, exotic shapes and great uncertainty: while mathematicians understand phenomena in low and high dimensions very well, the 4D world raises many questions
4 HOURS AGO
Viper Image That Caused Alarm in California Was A.I.-Generated
A Gaboon viper, a venomous snake native to equatorial regions of Africa, was supposedly photographed in a tree in Santa Ana, Calif. How could that be? Well, it turns out it wasn’t.
7 HOURS AGO
See How El Niño Is Washing Ashore in California
An enormous pulse of wave energy will soon reach Southern California and continue north, raising sea levels by half a foot and increasing threats from swells and tides.