For a long time, having children has been a young person’s game. Although ancient records are sparse, researchers estimate that, for most of human history, women most typically conceived their first ...

On April 5 and 6, over 300 people gathered to discuss reproductive issues at the Collective Power for Reproductive Justice conference at Hampshire College. The conference featured lectures and ...

Identifying the sex of animals can be difficult at first glance, depending on the species and their appearance. Lizards, crocodiles, and other reptiles are especially difficult to discern. However, ...

Epaulette sharks can reproduce without any measurable increase in energy use, stunning researchers who expected egg-laying to be costly. Scientists tracked metabolism, blood, and hormone levels ...