Humans don’t have a defined mating season like deer or wolves. Here’s how evolution blended biology, culture and social life into year-round intimacy.

In a new paper, researchers challenge the longstanding view that the force of natural selection in humans must decline to zero once reproduction is complete. They assert that a long post-reproductive ...

A new international study warns that reproductive health in space is no longer a theoretical concern and that questions about fertility and pregnancy should be pressing concerns. As commercial ...