All eyes are on Comet 3I/Atlas as astronomers worldwide chase the exotic ice ball through our solar system ...

Evidence shows that Medicaid improves people’s health and is particularly vital for babies, older people in need of long-term ...

Four research firms project that the Republicans’ One Big Beautiful Bill Act will raise greenhouse gas emissions and likely ...

Breakthroughs from two rival experiments, Germany’s Wendelstein 7-X and the Joint European Torus, suggest the elusive dream of controlled nuclear fusion may be within reach ...

Canceled grants and slashed budgets are disproportionately affecting junior health researchers, dealing a major blow to the ...

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

AI could be used to comb through electronic health records and warn vulnerable people about dangerous heat waves ...

Stars often whip their planets with solar winds and radiation, pull them ever closer with gravity and sear them with heat.

China’s Tianwen-3 Mars sample return mission could bring Red Planet rocks back to Earth as early as 2031—years ahead of competing U.S.-European efforts ...

We typically imagine echolocation as “seeing” with sound—experiencing auditory signals as a world of images like the ones our ...

Links to the U.S.’s most comprehensive climate reports—the National Climate Assessments—disappeared from the Internet on ...

New images from the European Space Agency’s Biomass mission show how the satellite uses advanced radar to map flows of carbon through our planet’s most precious and remote ecosystems ...