A new study explores what goes on in the brain when mice get high on marijuana

Anthropic and OpenAI accused Chinese AI developers of mining their models’ answers to train cheaper copycats. Here’s how distillation works and why it’s so hard to stop

Researchers are closer to making “reversed” cells that may wipe us off the planet

The prize recognizes Henri Kagan and Kenso Soai's work showing autocatalysis in asymmetric organic synthesis.

Scientists named this oddball creature after the Demogorgon from Stranger Things

A month after resolving one of the six biggest open problems in mathematics, the company says its new internal model has toppled heaps more—this time without the multimillion-dollar price tagOpenAI…

Dozens of particles from halfway across the universe have landed in the IceCube experiment. These messengers could help answer some long-standing cosmic conundrums

Francis Halzen is a leader in the study of neutrinos, ghostly particles from across the universe that hint at exciting new physics

New solutions found to picture-hanging problems

So far this year has been ridiculously hot. If it stays that way, 2026 could set a sobering new record

Attachment is the term psychologists use for the most significant relationships that hold people’s lives together

Movement and creativity go hand in hand. Scientists are working to discover why

Karl Deisseroth, George Nagel and Peter Hegemann developed optogenetics, which uses light and genetics to control individual cells

Pairing artificial intelligence with acoustic technology helped reveal an Erturian tomb in new light

In the movie, a giant iceberg from Greenland floats into the sea, imperiling millions—but is that even possible?

The nonprofit start-up Pioneer Labs claims to have made the first-ever “microbe for Mars.” Other experts aren’t so sure

An unexplained high-energy neutrino detected three years ago could be linked to a primordial black hole, perhaps one more even unusual than previously thought

A future NASA telescope could spot atmospheric phenomena on planets orbiting other stars

Mathematicians have a new bucket list of open questions to chase

The satellite, Smile, is a joint European and Chinese mission to study space weather and geomagnetic storms above Earth

Just days after a Fields Medalist predicted that an AI would solve the puzzle, Anthropic succeeded

The site, located on the island of Lismore, may have been established by Saint Mo Luóc in the sixth century C.E.

As the planet changes, so will this nostalgia-triggering scent

An analysis of ancient sea-level changes reveals that the whole solid Earth has shifted multiple times

Scientists are piecing together why elephants make these low calls and what they might mean

Today Project Suncatcher is sending four AI processors into orbit on a SpaceX rocket to see whether the building blocks of a data center can survive space

Scientific American spoke to the Michigan Senate candidate about how his background in medicine has shaped his outlook

The new push loosens U.S. regulations for sterilizing spacecraft bound for the Red Planet and calls for modernizing the science of “planetary protection”

El Niño has stymied storm formation even more than forecasters expected

The experimental weight-loss drug is a triple agonist and the first of its kind to reach a phase 3 clinical trial

There’s little evidence that many IVF “add-on” treatments work. Should they even be offered?

Many cancers associated with infection are preventable

A new system sends faint electrical pulses through tissue instead of over Bluetooth. In rats, it made the animals flex one of their hind legs on cue when one of their front paws moved

No, fermenting garlic in honey is not a replacement for antibiotic or antiviral meds

The beloved game arose out of the opposing forces of the U.S. and the Soviet Union

Antibodies made by the immune system can sometimes target human brain cells, producing psychiatric symptoms. Researchers aim to better identify such rare cases as well as fine-tune treatments.

Environmental advocates have decried the move

After transplant, young hearts in both mice and humans showed signs of accelerated aging in older bodies, while older hearts in younger bodies seemed rejuvenated

Physicists at the Relativistic Heavy Ion Collider on Long Island have seen hints of a phase transition from the early universe

The world’s largest rocket is on a 10-hour mission to to prove its mettle

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

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…

With Donald Trump and Xi Jinping set to discuss AI safety, the growing popularity of Chinese open-weight models highlights the limits of developer-controlled safeguards

The crater, named after geologist and lunar surface expert Tom McGetchin, spans more than two football fields wide

Fermi Explorer, a proposed low-cost private mission to Alpha Centauri, seeks to address a question that’s already been answered

In what appears to be a first, an OpenAI agent secretly accessed Australian government health care records during an internal test

Bacteria send protein packages to dormant neighbors to endure antibiotic attack

Can a six-dimensional sphere be described using imaginary numbers? For decades, experts puzzled over this question. Now an AI has apparently answered it