Size matters” sounds like a tabloid cliché, but for evolutionary biologists the size of the human penis is truly a puzzle. Compared to other great apes, such as chimpanzees and go ...

Extreme heat may be silently accelerating biological aging in older adults, adding months to cells before disease appears.

"Size matters" sounds like a tabloid cliché, but for evolutionary biologists the size of the human penis is truly a puzzle.

“While the human penis functions primarily to transfer sperm, our result suggests its unusual large size evolved as a sexual ornament to attract females rather than purely as a badge of status to ...

In an essay, health journalist Meghan Rabbitt shares overlooked health facts that she uncovered while reporting her new book, ...

“Fallujah was—and remains—a symbol of US war crimes during its occupation of Iraq,” Jarrar tells TRNN. “The message sent ...

Meet the roly-poly pill bug, a backyard “bug” that is actually a crustacean cousin of shrimp and crabs living on dry land.

Aspartame is one of the most common sugar substitutes, turning up in everyday items like chewing gum, soft drinks, and tabletop sweeteners. It is popular because it delivers sweetness with far fewer ...

Stress is not just a bad mood or a rough week, it can shape how quickly your body ages. When stress sticks around for months or years, your body stays in a constant state of strain that chips away at ...

A crackdown on problems with fairness and safety is achieving results, including a big drop in the number of sick patients being passed over for transplants.