The problematic sexual history of the supposedly progressive rock star.

Three days after the devastation of Hiroshima, U.S. forces carried out the atomic bombing of Nagasaki on August 9, 1945. The attack killed 70,000 in an instant and remains fiercely debated to this day.

Learn about the real-life tragedy of Charley Ross that inspired the phrase "Don't take candy from strangers."

Decades after the HIV/AIDS crisis, a partial ban still makes it effectively prohibitive for gay men to donate blood.

Before federal food safety regulations really existed in the U.S., one man made it his duty to prove that food additives were harmful to human health -- and he did so in a rather unconventional way.

We tend to think that humans can have the most disruptive impact on the planet. As these volcanic eruptions show, that's really not the case.

As interest in travel beyond our atmosphere continues to grow, what happens when you're in need of surgery in space, miles above the Earth?

Throughout the 20th and 21st centuries, a number of women have helped get the American electorate acclimated to the idea of a woman in the Oval Office. Here are four female presidential candidates you should know.

We often take the age a girl starts her period for granted. But history shows us that since Medieval times, that age has been getting steadily lower.

Believe it or not, women originally started wearing heels to appear more masculine.

Unique to humans, happiness is one of the hardest emotions to define or understand. What do we really know about the science of happiness?

From Cold War spies to Aztec conquerors, these famous betrayals are a reminder that human history isn't marked solely by acts of goodwill.