Only 8% of the world’s currency is physical money. The rest exists only on computers.
20
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
A scorpion can hold its breath for up to 6 days.
19
A man named Ziona Chana lives in a 100 room, four storey house set amidst the hills of Baktwang village in the Indian state of Mizoram and has the world's biggest family with 39 wives, 94 children, 14 daughters-in-law and 33 grandchildren.
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