New research shows that birds investing more energy in reproduction age faster and live shorter lives than those investing less.

New research shows female baboons influence fertilization through immune and chemical changes that affect sperm survival.

James Kitching, one of the most talented South African fossil hunters of the 20th century, excavated many thousands of ...

A rare crab found in India shows both male and female traits, helping scientists unlock secrets of sex development and ...

Ducks with corkscrew penises, fish changing sex – what do we really know about sex and reproduction on Earth? Less than we think, reveals a mind-boggling new book. Elle Hunt explores ...

The Atlantic Forest, extending along Brazil’s eastern coast, was once among the most biodiverse ecosystems globally. Currently, only about 24% of the original Atlantic Forest remains. Beyond ...

These mantises are increasingly posing a threat to local biodiversity through intense predation and competition for reproduction.

Discover 30 fascinating facts about hyenas, from their matriarchal clans to their bone-crushing bite. Find out why these ...

Powerful punches. Flesh-tearing teeth. Deadly talons. We explore the best (or is it the worst?) weapons in the natural world.

Direct survival benefits in larger groups rather than kin-selected indirect fitness primarily drive the evolution of division of labor in cooperatively breeding vertebrates, particularly under harsh ...

A remarkable new discovery is shedding light on one of the greatest survival stories in Earth's history, and answering a ...