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TIL that some species of bees form a 'hot bee ball' formation around hornets in order to overheat their enemy's bodys to around 47°C and thus kill them.

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j6MAj TIL Paul the Octopus correctly selected eight out of eight winning teams for football matches, including Spain's win over Holland in 2010.
1BPX TIL the first Sci-fi novel was written in 2nd Century AD, and featured a group of sailors whose ship is caught in a waterspout and sent to the moon.
rRv7M TIL that Eratosthenes, a Greek mathematician and astronomer (276 BC), measured of Earth's circumference by using the shadow angles from the sun in two locations. He calculated it was 39,375 km, which is 1.4% less than the real number of 40,076 km