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TIL: Apple Watch sales in 2020 amounted to ~$30.6bn compared to the whole Swiss watch market exports of ~$16bn.

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9wWJB TIL Theologian and paleontology pioneer William Buckland conducted the first ever reconstructions of prehistoric food chains by studying fossilised feces. Through observation alone he figured out the diet habits and anatomy of species like the ichthyosaur
b9a1p TIL of Kari's Law. In 2013 a woman was murdered in a hotel room by her husband while her nine-year-old daughter tried to call 911 four times. The calls did not go through because the hotel phones required all calls to start with 9 (making 911 9911). The law removes the need for the 9 in hotel phones
vPR7K TIL about the Cerutti Mastodon Site, a paleontological & possible archeological site where broken mastodon bones with cobblestones showing wear & impact marks among the otherwise fine-grain sands were found. One theory suggests this to be evidence for an earlier human migration to North America.
Egev7 TIL the Purple Earth Hypothesis proposes that the Earth's surface biosphere may have appeared purple in the past due to photosynthesis at the time being based on simpler retinal instead of more complex chlorophyll
oBQxK TIL the Fibonacci Sequence was identified by ancient Indian author Pingala around 200 BC. Writing about meters in Sanskrit poetry, he also described binary numbers (in the form of short & long syllables, similar to Morse code), Pascal's Triangle, and the first known explicit reference to zero.