For years, scientists believed that dinosaurs first emerged in Gondwana—the southern portion of the ancient supercontinent ...

The Vietnam War ended on April 30, when the North Vietnamese captured Saigon (now Ho Chi Minh City). Microsoft Corp. was founded in April as a partnership between childhood friends Bill Gates and Paul ...

A chicken-sized dino, the oldest known in North America, has thrown a wrench in the widely accepted timeline of early ...