Finding cosmetics that are free of hormone- disrupting chemicals often means paying more. An epidemiologist explains the risk, particularly for young women.

Research shows that many girls are in elementary school when they have their first period. But often they have not received adequate health education.

Fast fashion is far from green. But the rapid expansion of online clothing resale platforms could help shrink the garment industry's negative impact on the environment.

The gender gap in computing performance has dramatically narrowed, but a confidence gap remains.