Modern HIV medicine is based on a common genetic mutation. Now, researchers have traced where and when the mutation arose -- and how it protected our ancestors from ancient diseases.

Guthrie responded to the discovery of “Blue Babe,” a 50,000-year-old steppe bison found north of Fairbanks in 1979.

American chemist Alice Ball revolutionized leprosy treatment by making chaulmoogra oil injectable, decades before antibiotics ...

A new study from the University of Helsinki has provided a compelling new explanation for the devastating droughts that took ...