A new study is among the first to look at whether cold or hot soaks help women’s muscles rebound from extreme exercise.

An 80,000-year-old bone point found in Eastern Europe challenges the idea that migrating Homo sapiens gave the technology to Neandertals.

Hundreds of millions of years before oxygen surged in the atmosphere 2.4 billion years ago, swaths of oxygen winked in and out of existence in the ocean.