A sociological explanation for why the Bay's homelessness epidemic is so intractable.

The Thames Tunnel, the world's first underwater tunnel, is still in use 175 years after its long-delayed opening, but you can't shop there anymore.

The astrolabe was a revolutionary tool for calculating celestial positions and local time. The device's design dates back to Islamic antiquity.

As the climate changes, snowfall in many areas has decreased. As natural snow is replaced with artificial snow, what is the environmental impact?

Stories emerged in the centuries after Alexander the Great’s death. They revolved around Alexander's failures, not his victories. The portrait that emerges is strangely poignant.

James Hinds was assassinated for his beliefs, and today is largely forgotten. He stood up for African-American civil rights during the Reconstruction, provoking the KKK's ire.

Over the centuries, the idea of vocation has evolved to such a degree that it now encompasses any occupation which satisfies a personal calling.

In eighteenth-century New England, funeral attendees went home with funeral tokens–usually a pair of gloves or a ring that declared their sorrow.

The Hays Code kept Hollywood on a short leash until the Supreme Court decided in 1952 that films were protected by the First Amendment.

The grainy pictures speak for themselves. Or so thought many Americans who watched the video of the March 3rd, 1991, beating of motorist Rodney King by Los Angeles police officers.