Learn how male bonobos use subtle behavioral and reproductive cues to pinpoint the fertile window, even when the usual ...

A study reveals how seabream change sex and why some males invest more sperm, rewriting the hidden biology of these fish.

Male bonobos are able to interpret female fertility cues even when those signals do not reliably indicate ovulation. This ability helps them direct their mating efforts toward times when conception is ...

Discover expert-backed tips to identify male vs. female bearded dragons and learn why sexing matters for proper care and long ...

Perched on a plastic chair overlooking a colony of Nazca boobies in the Galápagos Islands, researcher David Anderson ...

After the huge response to our list of Hottest Actors Over 50, we're turning the spotlight to Hollywood's most glamorous and ...

In 2002, evolutionary biologist Jenny Graves shared a controversial calculation. The human Y chromosome, she wrote two years ...

For those who have not made the pilgrimage to Mecca, something may surprise. The men cry. Quietly and intimately, but obviously. Some are hard men from hard lands, but they’re not ashamed to do this.

From the ocean to the classroom, from Atlantic Canada to the U.S. South, these people are finding ways to save a species ...

Although evidence of a new infusion of bloodlines is lacking, both transplant animals are alive, and breeding is anticipated ...

Unfortunately, one million endangered species could become extinct. On World Wildlife Day, learn who is at risk and how to ...

In March, geese returned to the pond in the middle of campus, 50 of them, grown birds and later their goslings, splashing in ...