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TIL there is a part of the brain thought responsible for gender identity, and in transsexual individuals this area resembles that of the gender they identify with - suggesting transsexuality is at least partially biological

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OoJWL TIL Tardigrades, or water bears, were filmed mating for the first time in 2016 by German researchers. The female lays eggs, the male gets into position (a process that can be several minutes); they engage in mutual stimulation till the male ejaculates his semen into the female's outer layer of skin.
epV5 TIL that in 2005 someone made the whole of the UK a single golf hole over 1,000 miles long. It took him 247,000 shots to complete
8eQWP TIL that text messages have been sent electrically since at least 1774 when George-Louis LeSage sent static charges between two rooms in his house via 26 wires, one for each letter of the alphabet.
4kNY6 TIL the term 'Gypsy' for Romani people likely arose from perception that they were 'Egyptians', evidence suggests most Romani originally came from India
R7W66 TIL: 'Budgie' & 'Parakeet' can refer to the same small Australian parrot, the Budgerigar. In nature it is mostly green, in captivity blues, whites & greys are also bred