To celebrate Scientific American’s 180th anniversary, we’re publishing a jigsaw every weekday to show off some of our most ...

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

As large language models like Claude 4 express uncertainty about whether they are conscious, researchers race to decode their ...

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

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

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 ...

The largest yet study on a four-day workweek included 141 companies, 90 percent of which retained the arrangement at the end ...

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 ...

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

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

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 ...