Anthropogenic sounds have made it all the way down into the deepest place on Earth—Challenger Deep, in the Mariana Trench.

A massive collection of dried flower specimens demonstrates that climate change disrupts the timing of spring blooms.

One of the biggest advances in AIDS vaccine research was a controversial, landmark treatment that tested a new vaccine on 16,000 Thai volunteers.

The form flourished in the 1950s, as poets and musicians inspired each other to new heights.

US police departments began taking photographs of people they arrested in the 1850s.

A contemporary scholar uses the ancient Greek historian to explain the 1968 Pueblo Crisis in North Korea.

The first manuals for knitting were printed in the 1830s. Those interested in the history of knitting will find them a rich primary source for research.

A series of reforms known as the Patriotic Health Campaign brought colorful posters depicting good hygiene and workplace safety practices.

Not everyone in the nineteenth century was on board with expanding the territory of the US from coast to coast.

Assigning one sex to people with ambiguous genitalia has a long history in medicine and law.