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TIL Australian astronomers discovered a mysterious signal to be their microwave oven after 17 years

Read more wired.co.uk

via reddit.com

ROa1 TIL Stone castles were very, very effective against the Mongols. They sustained heavy casualties trying, but were never able to take a single one in two invasions of Hungary.
oppA TIL the stock deal which took place at the end of Trading Places was legal until 2010. It was outlawed under the Wall Street Transparency and Accountability Act, also known as “The Eddie Murphy Act”.
nWnX9 TIL about Snake Island, an island off the coast of São Paulo, Brazil which is closed to the public for safety reasons. It is the only known home of the endangered Golden Lancehead, whose cytotoxic venom is up to 5 times stronger than other pit vipers.
X0gXP TIL pop singer Lily Allen turned down 200,000 bitcoin to play a show in 2009. At today's value, that would be worth over ten BILLION dollars.
E1nXP TIL that in 1958, Canada set off one of the largest intentional non-nuclear explosions in history to remove a rock in the middle of a shipping lane. A tunnel half a mile long was dug out under the ocean and filled with 2.75 million pounds of explosive.