› added 8 years ago

114

TIL many rockers have suffered injuries from headbanging.

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PYj4Z TIL that Goose bumps evolved to make our ancestors’ hair stand up, making them appear more threatening to predators.
78y8r TIL that the Cahokia Mounds in Illinois are at the largest pre-Colombian city in North America. At it's peak in 1100 CE, the city covered 6 square miles and housed upwards of 15,000 inhabitants. Indigenous people today, including the Cherokee and Choctaw, continue these mound-building traditions.
pY7XZ TIL Betelgeuse is a red supergiant star in Orion that is one of the largest and most luminous stars in our galaxy. It exhibits variations in brightness due to surface pulsations and its size is rapidly decreasing, which has led to speculation that it may soon undergo a supernova explosion.
AD94B TIL A Colombian drug cartel put a $70,000 bounty on a police dog because it sniffed out almost 10 tons of drugs in 300+ operations, leading to 245 arrests.
Lky5Q TIL about Alfred Russel Wallace, a British naturalist who thought up the theory of evolution by natural selection. After recording his expedition findings in the mid 1800’s, Wallace sent his work to his confidant Charles Darwin for a second opinion. Their first paper was a joint effort.