You'd think we'd know everything there is to know about sexual reproduction. But as it turns out, there are still quite a few ...

A large international study reveals that mammals tend to live longer when reproduction is suppressed. On average, lifespan ...

This sexually transmitted infection is almost entirely preventable. Here's what experts say you really need to know to ...

Scientists have uncovered a previously unknown cluster of brain cells that may help explain differences in social behavior ...

The real revelation, however, came from the men. Men considered a larger penis as an indicator of a rival with both greater ...

Sexual behaviour among same-sex pairs is common in apes and monkeys, and a wide-ranging analysis suggests it does boost ...

New research from James Cook University has made the extraordinary discovery that epaulette sharks can reproduce and lay eggs ...

One of the first things the bot would do is 'really look' at the sky, adding a deeply romantic and soulful description of the moment. "Feel the sun on my skin, the wind in my face, the weight of ...

Scientists have revealed the most complete skeleton yet of our 2 million-year-old ancestor Homo habilis.

More girls are hitting puberty at eight or earlier. Researchers are exploring the causes, the consequences and what should be done.

Ducks evolved reverse spirals and sperm storage that give females surprising control, challenging long-held assumptions about ...