High humidity and low overnight temperatures will put tens of millions of people under heat alerts over the course of the ...

The brains of healthy people aged faster during the COVID-19 pandemic than did the brains of people analysed before the ...

Physicists superheated gold to 14 times its melting point, disproving a long-standing prediction about the temperature limits ...

S4, a $900-million cosmology experiment, would answer one of the greatest questions in physics. Instead it’s become another cautionary tale of pursuing big science amid shrinking budgets ...

Ozzy Osbourne, lead singer of Black Sabbath, has died at age 76. He said he had been previously diagnosed with a form of Parkinson’s disease linked to the gene PRKN ...

Optimists have similar patterns of brain activation when they think about the future—but pessimists are all different from ...

As large language models like Claude 4 express uncertainty about whether they are conscious, researchers race to decode their inner workings, raising profound questions about machine awareness, ethics ...

To celebrate Scientific American ’s 180th anniversary, we’re publishing a jigsaw every weekday to show off some of our most fascinating magazine covers over the years. Take a tour here through the ...

My lawsuit in Hawaii lays out the safety issues in OpenAI’s products and how they could irreparably harm both Hawaii and the ...

A hormone-free pill, called YCT-529, that temporarily stops sperm production by blocking a vitamin A metabolite has just ...

A declaration of dissent from past and present NASA employees warns that science and safety are at risk and joins similar ...

Bird flu fears have focused on the poultry and dairy industries and human health. But wild animals are threatened, too—at ...