When a slew of saucer-like sightings was reported over Washington, D.C. in 1952, the Air Force got nervous and blocked its own investigator from checking them out.
The Yippies found their voice by organizing an absurdist counter-convention—including nominating a pig for president.
Egyptologists once thought a body dating from 3700-3500 B.C. had been naturally mummified, but analysis shows it has traces of an embalming recipe used on mummies thousands of years later.
Read excerpts from letters, speeches and memoirs reflecting on each stage of his life—from the innocence of a tribal village boy to the triumphs and pressures of being South Africa's first black president.
Plenty of questions remain about who these humans were and what evolutionary advances enabled them to wander thousands of miles across continents.
Roosevelt's heroism at the Battle of San Juan Hill was the culmination of years of conscious personal transformation and myth-making.
One storm left an estimated 8,000 dead in its wake, while an epic flood carried human bodies some 350 miles away.
There have always been daredevils. But never has there been such a variety of creative ways to defy death—and break a few world records along the way.
