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TIL that in the 1930s New York city planner Robert Moses deliberately built a number of bridges really low so that only cars could go under it - so as to prevent blacks (who mostly used public transport) from visiting New York’s ‘pristine’ beaches

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x6gEk TIL deep penetrating "earthquake bombs", made of almost 50% high-tensile steel, were invented by Barnes Wallis, the British inventor of the bouncing bomb used by the Dambusters in WW2. The 22,000lb / 10,000kg Grand Slam was the largest non-nuclear bomb used in WW2.
P1Ke TIL That a 456lb man underwent a clinically supervised fast for 382 days. Took multivitamins, lost 275lbs, crapped every 40-50 days.
PYD1J TIL That The First Gravity Chairs Were Developed To Help Astronauts Mimic Posture During A Shuttle Launch.
rRKEe TIL that A typical four square mile patch of rainforest contains as many as 1500 species of flowering plants, 750 species of trees, 125 mammal species, 400 species of birds, 100 of reptiles, 60 of amphibians, and 150 different species of butterflies.
jdPN TIL Déjà vu can be a chronic medical condition. Patients have problems watching TV because everything feels like a rerun and some refuse to see a doctor because they feel like they already have.