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TIL that space has a smell. Astronauts often describe it as smelling like walnuts, brake pads, gunpowder and burnt meat.

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91gp TIL Singers in a choir unconsciously coordinate their breathing patterns, which leads to synchronized heart rates, especially during slow chanting.
4Y4o TIL in the 1920s, people feared that crossword puzzles would contribute to illiteracy.
4kVA6 TIL that 54% of American adults are considered to have inadequate literacy
ewNb TIL that napping improves your stamina, boosts your creativity, reduces your stress, increases productivity, decision making ability, your sex life and much more.
e0rXk TIL that Jews were often blamed and persecuted for being the cause of the Black Plague.