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TIL in the US in 1944 there were 25.6 million dairy cows which produced 53.0 billion kg of milk. In 2007 there were only 9.8 million dairy cows (38% of previous population) yet they produced 84.2 billion kg of milk (59% more).

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wDPW TIL the truth about Kid Rock’s cheap tickets. The 1000 he didn’t sell on ticket master every night he scalped himself via the “ platinum seats” program where the 1000 best seats were sold at “ market value” 100-400 each.( more info in comments)
Kd94 TIL Saltwater Crocodiles are great swimmers, often spotted far out at sea, and even eat sharks.
1agP4 TIL: pumpernickel bread is derived from the Baviarian word "pumpern" (flatulence) and "nickel" (goblin or devil), so it is "devil's fart" bread
kODMe TIL during a car accident a sodium azide pellet is ignited by an internal car sensor and explodes generating toxic/highly-explosive gas at a 250 mph velocity which undergoes a series of chemical reactions before turning into a non-toxic, stable silica glass... and that's how your airbag is inflated.
nbO9 TIL in Iceland people use geysers to bake bread.