Recent changes in the distribution of the Welsh language are related to a process of empowerment of a Welsh-speaking elite that has come into being as a consequence of economic change, especially ...

A soft-bodied, fernlike creature reproduced in Earth's ancient oceans about 565 million years ago, making it the earliest known example of procreation in a complex organism, a new study finds. Many ...

Biologists are uncovering increasing evidence that females are much more than passive players in the game of reproduction. Examples include ducks with labyrinth-like vaginas that open or close to dead ...