Category History

Keeping Time: Leap Years and the Gregorian Calendar

February 29 only comes around once every 4 years in the Gregorian calendar. The Gregorian calendar is the calendar used by most of the world. Also called the “Christian calendar” or “Western calendar,” it is internationally accepted as a civil…

Why was whaling so big in the 19th century?

This 1905 photo shows a whaling ship surrounded by several dead whales in Spitsbergen, Norway. In the mid-1800s, a seaman named Charles Nordhoff found himself on the deck of a ship, coated head to toe in the fat of a…