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TIL Dragonflies are capable of higher-level thought processes when hunting its prey. The discovery is the first evidence that an invertebrate animal has brain cells for selective attention, which has so far has only been demonstrated in primates. It selects one target and filters out all others

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DQKvV TIL that the Inughuit (aka Polar Eskimos) lived in such extreme isolation prior to being contacted by Europeans in 1818 that they were unaware of the existence of other humans, including other Inuits. Due to their isolation they had lost various technologies such as boats and bow and arrows.
nekX7 TIL that mid grade gasoline doesn't really exist and is usually blended at the pump
R5kP6 TIL - Walter Orthmann, a 100 year old, set the Guinness World Record for working at the same company for 84 years and nine days.
b6Ox4 TIL in 2009, Benjamin Moody cracked the signing key to a TI-83+ calculator in 73 days on a 1.9 GHz dual-core processor, allowing users to flash their own OS. In 1999 same algorithm required a Cray supercomputer and 8000 MIPS-years of computing time to factorize a similar 512-bit key.
4XRbR TIL that if you eat a polar bear liver, you'll die. Humans can't handle that much vitamin A.