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TIL this species of desert tadpole shrimp, Triops newberryi, is found in the western US. It only hatches during periods of seasonal flooding and can live to 90 days. This shrimp's eggs are known to stay viable for at least 50 years. It is being considered as a biocontrol agent for larval mosquitoes.

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78RyL TIL Belavezhskaya Pushcha National Park's 1300 sq km of primeval forest is the last remains of a canopy that eight centuries ago covered northern Europe. Its 300 or so European bison were driven to near extinction before being bred back from 12 animals
E1E0X TIL the first airplane dogfight was between two American mercenaries on opposing sides in the Mexican Revolution. Both men had orders to kill, but neither pilot wanted to harm the other, so they exchanged multiple volleys of pistol fire, intentionally missing before exhausting their ammunition.
Bvyb TIL that the richest woman in Germany met her future husband while she was working in an apprenticeship at BMW (which she owned 12.5 percent of) under a fake name. He had no idea who she actually was until they were sure about their relationship.
b9yn7 TIL authors of the NUCLEAR WINTER hypothesis, Carl Sagan and Richard P. Turco, conceded to significantly scale back their theory after much criticism from specialized experts, including exaggerated numbers of dust and ash which wouldn't be the case from airburst nukes.
Br9xe TIL In 1988 Nancy Knight, a scientist at the National Center for Atmosphere Research in Boulder, Colorado, USA, found two identical snowflakes.