Why human hair stops growing at a certain length comes down to a biological clock built into every follicle — here's the ...

Here’s what you’ll learn when you read this story: The word “chimera” usually evokes images of mythological, multi-headed beasts, but the term also comes with more modern, scientific connotations. For ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Here’s what you’ll learn when you read this story: While bones can regrow themselves ...

In a Maryland operating room one day in November 2025, doctors made medical history by transplanting a genetically modified pig kidney into a living patient. The kidney had been engineered to mimic ...

Early humans experienced a 'growth spurt' around two million years ago, making it easier for them to travel long distances, a ...

Here’s what you’ll learn when you read this story: With more than 100,000 people in need of an organ transplant in the U.S. alone, scientists have turned toward perfecting human-animal chimeras as a ...