› added 2 years ago

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TIL about “teaser” stallions whose job it is to tell if a mare is ready for mating. He never gets to do the actual mating - the valuable stallion does. Kind owners sometimes give him a “consolation mare” to mate so he doesn't get sexually frustrated with his job.

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BrXVK TIL barns are painted red because old paint recipes contained ferrous oxide (rust). Rust was plentiful on farms and because it killed fungi and mosses that might grow on barns, and it was very effective as a sealant. It turned the mixture red in color.
ZJmv TIL that NASA is well on its way to developing a reactionless propulsion system for spacecraft.
DQP4p TIL that Sigmund Rascher, a scientist who performed inhumane medical experiments at Dachau, was himself imprisoned and executed by the Nazis at Dachau after it was revealed that he and his wife were committing fraud by kidnapping (German) babies.
b69RZ TIL airports renumber their runways because the magnetic pole is not fixed, and headings change slightly over time
BPPK TIL that Ketchup, both the word and sauce, originate from China