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TIL despite being commonly thought as being nothing but a desert, Arizona has the largest contiguous pine tree forest in the world

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jNjnN TIL That Tuckaleechee Caverns in Tennessee are used to detect underground nuclear tests all over the world through seismic activity in the dense limestone.
9wVbX TIL Oilbirds (Guácharos) are cave dwelling nocturnal fruiteaters that breed and roost in large colonies in lightless South American caves. They echolocate, use whiskers to sense surfaces, and have eyes with the highest light-gathering capacity of any bird. Their chicks are rich in fat.
GYmdE TIL Louisville's Brandeis School of Law has the name of former U.S. Supreme Court Justice Louis Brandeis. It also has his body: he's buried underneath it.
LprP TIL - Bitcoins were developed by an anonymous software designer who called himself Satoshi Nakamoto. In 2010 he turned over the source code and disappeared. Nakamoto is believed to be in possession of roughly one million Bitcoin. In December 2013, this was the equivalent of $1.1B
8mkK TIL that the retinas of Robins contains Cryptochrome, a protein which allows them to see magnetic fields. The magnetic fields are visualised as patterns of light and shade and perhaps colour, onto the visual imagery.