Many species on the tepui summits are found nowhere else. How did those species get there?

Frederick Hollick's case involved not only his controversial sex-positive arguments, but also the question of who should be privy to medical knowledge about sex.

In retrospect, the violent events at Kent State on May 4, 1970 marked the ending of widespread campus protest left over from the turbulent 1960s.

In Japan, elderly people are committing crimes just so they can go to jail and feel cared for. A similar situation has played out in India, where the elderly have been left out of traditional social support networks.

Studying the artist's paintings may reveal more about the her early trauma and subsequent pain than suspected.

In the Old West, cross-dressing was sometimes a disguise for criminals on the lam. But, one historian argues, in many cases these “cross-dressers” were probably people who we would identify as transgender today.

Extinct in the wild, the Franklinia tree is still cultivated in botanical gardens, private homes, parks, even cemeteries. It's also got an interesting Revolutionary-era backstory.

Human beings seem to be born wearing rose-colored glasses. Psychologists are interested in how this bias toward the positive works in the very young.

In 1874, popular writer Henry Hooper called the hotel clerk “the supercilious embodiment of Philistinism.” What accounts for the nineteenth century hate?

Reconstruction is one of the least-known periods of American history, and much of what people think they know about it may be wrong.