A new geological study challenges an old theory that scientists have previously used to account for these gaps.

Explorer George Murray Levick was both excited and shocked to discover the extreme sexual displays he saw among Antarctic penguins.

After disarming an assassin, Oliver Sipple was hailed a hero. But the ensuing media storm outed him as gay and upended his entire life.

In 1968, Shirley Chisholm made history when she became the first African American woman elected to Congress. Just four years later, she set her sights on the White House.

The Black Death was the deadliest pandemic in human history and scholars still struggle to map when and where it began. But some of the most compelling theories are truly disturbing.

Doctors believe the bullet entered the woman's left side, was diverted by her implants, and then lodged behind her right breast where it remained until surgery.

Poetry challenges known as 'flyting' duels were the medieval equivalent of the modern-day rap battle.

Researchers observed 28 different luminescent signals exchanged between the squids.

Archaeologists believe the mummy may have been a healer or priestess when she was alive.

Shark finning kills about 73 million of these animals each year just so we can make shark fin soup, a traditional dish that remains popular despite sometimes being toxic.