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

Super Agers author Eric Topol unpacks the rise of biological age tests—from organ clocks to immune system clocks—and how they might revolutionize early diagnosis of disease ...

Elon Musk has launched xAI’s Grok 4—calling it the “world’s smartest AI” and claiming it can ace Ph.D.-level exams and ...