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TIL that more than half of the oxygen we breathe come from marine photosynthesizers like seaweed and phytoplankton.

Read more ocean.si.edu

via reddit.com

R80j TIL drinking was allowed in bars in Atlanta, Georgia in 1969 only if men were wearing suits and ties.
VM0kB TIL in 1944, 3 B-29 bombers made emergency landings in USSR. Stalin ordered his engineers to clone them. A small hole was found on the left wing of the captured B-29 which was probably drilled by mistake. So, a very small unnecessary hole, made with the thinnest drill, appeared on all Tu-4 bombers.
kOR1g TIL that the CEO of Ford Motor Company is actor Chris Farley's cousin
BrMky TIL that about seven in 10 wealthy families lose their fortune by the second generation and by the third generation, that number has jumped to 90 percent.
XEOxr According to the independent research group Shrink That Footprint, apartments in Hong Kong are on average the smallest in the world (484 sq ft). The average one-bed flat size in Manhattan, New York, is 716 sq ft, in London, it is 550 sq ft. And soon, by converting drainpipes into homes, flats in Hong Kong are set to shrink even more.