› added 9 years ago

262

TIL Lightning can reach temperatures 5 times hotter than the sun

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5YKRP TIL Alberta Canada is the largest inhabited land mass that has no rat population. Every territory surrounding it has rats, but high rat control efforts have kept them out.
9wldQ TIL the Great Wall of China is only visible from space if you have good eyesight!
5PQ TIL the clapperboard you see at the beginning of movie takes is to synchronize the audio and video tracks, because the sound is easy to identify on audio tracks.
Gv04 TIL that not swinging your arms when you walk increases the effort of walking by 12%, the equivalent of walking 20% faster or carrying a 10 kg backpack.
BrnYW TIL the period in China from the 18th Century to the end of the WWII, where the nation was dominated by foreign powers, is referred to as "the century of shame and humiliation."