HEALTH

Walter Reed touts 100 years of military health

WASHINGTON - At a time when many hospitals operated with few resources and in unsanitary conditions, the Walter Reed Army Medical Center was a state-of the-art facility - boasting electricity, indoor plumbing and an elevator. More »

Africans have world's greatest genetic variation

WASHINGTON - Africans have more genetic variation than anyone else on Earth, according to a new study that helps narrow the location where humans first evolved, probably near the South Africa-Namibia border More »