It’s that time of year: a thick, oppressive heat blankets everything, people huddle inside air-conditioned homes, offices, shops and cafes for respite—and COVID is surging again. Levels of SARS-CoV-2, ...

In the timelapse, on the left limb of the sun—that's the outer edge—we can see what is known as a solar prominence. This bright red structure is evidence of that plasma, extending out from the sun's ...

Ajdina Halilovic is a science writer and researcher based in London. She holds a degree in neuroscience from the University of Cambridge. She writes, most often and most dearly, about intelligence. Fo ...

This storm, a rarity for this part of the Pacific, is expected to bring heavy rains, strong wind and possibly “life-threatening flooding” to Hawaii this weekend ...

Why is there something rather than nothing? Philosopher Martin Heidegger called this “the first of all questions,” and it has vexed scholars and theologians alike throughout history. Science has yet ...

The 2026 total solar eclipse has come and gone, but that doesn’t mean the wonder has to end. Scientific American contributor and eclipse chaser Lucie McCormick watched the eclipse unfold from central ...

Researchers are finally learning the mechanism behind one of the most prescribed medicines in the U.S., primarily used to treat or prevent type 2 diabetes ...

In 2019, entrepreneur Bryan Johnson began to experiment on himself by taking daily injections of rapamycin. This immunosuppressant drug is typically used to prevent organ rejection after transplants, ...

Any parent of school-age children will tell you: squishies are it. The viral squeezable toys come in all shapes and sizes—some of the most popular look like food items such as dumplings, bananas, ...

The human brain, with its billions of interconnected neurons giving rise to consciousness, is generally considered the most powerful and flexible computer in the known universe. Yet for decades ...

There’s a $1-million prize for proving the Riemann hypothesis. Claude couldn’t pull that off, but it made significant progress on a related problem ...

People taking popular new weight-loss drugs such as Wegovy and Zepbound often celebrate the number of pounds they shed and the related health benefits, but many doctors at weight-loss clinics are ...