These serial killer quotes from monsters like Ted Bundy and Charles Manson will haunt your nightmares and reveal the darkest depths of human evil.

Be it time travel or, god forbid, spaghettification, these are six leading theories on what might happen to a person if they go inside a black hole.

After Ignaz Semmelweis first advocated for hand-washing to fight infection in the 1840s, doctors had him committed to an asylum. He soon died there from an infection in his hand.

Plus: Antarctica is actually gaining ice, but there's a reason scientists still aren't jumping for joy.

Plus, new studies show which foods are the most addictive and the shocking extent to which bacon increases cancer risk.

Discover these astounding space colonies designed by NASA in the 1970s and the Mars colony they're plotting now.

As incredible as Back to the Future made time travel look, the way the filmmakers created that vision behind the scenes is even cooler.

These little-known Titanic facts are sure to surprise you--and give you the chills.

This newly authenticated photograph of Wild West outlaw Billy the Kid, bought for $2 at an antique shop, could be worth around $5 million.

Plus: the world's most dangerous walkway has reopened, creepy vintage dolls to haunt your dreams, the year's best wildlife photography, and more.

These ancient maps, whether etched into brass or drawn onto deerskin, present a vivid, beautiful worldview that modern maps can't provide.