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TIL Camels first evolved in North America

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Nvx1 TIL that humans have an innate circadian rhythm of 25 hours when external cues are removed, as opposed to earth’s 24 hour days. One day on Mars is 25 hours.
4x9w TIL a Black Robin named Old Blue has become the mother of her entire species when she was the last fertile female in a group of 5 Robins. There are now 250 Black Robins on the Chatham Islands, and have raised their status from Critically Endangered to Endangered.
eyRD TIL goats have successfully had a gene from a spider introduced via transgenesis so that the goat’s milk can produce spider silk proteins. That protein can then be extracted and spun into silk.
ADAEa TIL a Wal-Mart employee was trampled to death by Black Friday shoppers in 2008. While other employees attempted to help him, the shoppers were unconcerned with the victim's fate and refused to halt their stampede, complaining that they were not willing to wait in the cold any longer.
4kgOg TIL There is an unsanctioned “art museum” that Astronauts on Apollo twelve snuck onto the moon.