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We’ve all heard the saying “you are what you eat”—especially when it comes to gut health. But what if your workout matters just as much as your diet?

Screwworm parasites primarily infect livestock, but human cases have risen in Central America after the pests escaped containment

Researchers have used cosmic explosions called fast radio bursts to illuminate the intergalactic medium

Even without subsidies, renewable energy is staying competitive with power from gas and coal

The nonprofit iNaturalist announced that it received a $1.5-million grant from Google’s philanthropic arm to develop generative AI tools for species identification. The news didn’t go over well

The collapse of the world’s second-largest ice sheet would drown cities worldwide. Is that ice more vulnerable than we know?

Writers, artists, photographers and researchers share the stories behind the stories

Outsmart greenwashing with tips for more sustainable clothing

Play this crossword inspired by the July/August 2025 issue of Scientific American

Earth will likely warm by more than 1.5 degrees Celsius, but we can’t give up on trying to get temperatures back down

New strategies help to reduce callous and unemotional traits in children, guiding them toward productive lives

Inside this double issue of SciAm, you’ll find black holes that burp up their stellar meals, metal detectorists that hit pay dirt, hope for psychopathy, the truth about testosterone and a consumer guide to sustainable clothes shopping

When nights stay hot, more people die, many from cardiovascular problems. But there are simple methods you can use to stay cooler and healthier

After black holes devour stars, sometimes the feast comes back up

Puzzle out the sequence of numbers that fill these polygons

The Danish government deputized private detectorists to unearth artifacts buried in farm fields. Their finds are revealing the country’s past in extraordinary detail

Science in meter and verse

Trade impulse clothing purchases for botanical dyes, upcycled apparel, creative mending, flexible sizing, and more

Toxic cigars; dueling with a swordfish

Letters to the editors for the March 2025 issue of Scientific American