After Charles Hatfield began his work to wring water from the skies, San Diego experienced its wettest period in recorded history.
The sweet potato is a New World food that spread around the world, including across the Pacific before the Europeans got there.
Electric cars were first introduced in the late 1890s, but they didn't catch on.
The history of cryptography.
The cultural importance of fire.
The 1752 British transition from Julian to Gregorian calendar added 11 days to people's lives.
A short history of the ballpoint pen and early debates about its impact on handwriting.
Origins of the North American fur trade.
James E. Doan reveals the sexual innuendoes and double-entendres based on Backgammon.
The complicated origins of St. Valentine's Day.