Friday links

From 1799, a list of risk factors for spontaneous combustion, plus more recent science.

Hunger Makes You Buy More Stuff, Even If It's Not Food

Stories from the history of science: the discovery of the stratosphere.

Death-Defying 40-ft Vertical Plunges: The High-Diving Horsewomen of Atlantic City.

What happened to vitamins F, G, H, I, and J?

How the Colombian army sent a hidden message to hostages, by hiding Morse code within a pop song:

ICYMI, Thursday's links are here, and include the anniversary of Iwo Jima, a two-story outhouse, the physics of sunsets, and the introduction of chocolate to Europe from the Americas.