› added 4 years ago

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TIL that two billion years ago, there were 17 stable nuclear reactors underneath central Africa

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N7VaM TIL West and East Berlin used two different kinds of street lights during the Cold War, producing different colours that are still visible from space, almost 30 years after the wall fell.
E1L4x TIL about Tulpamancy, a Tibetan Buddhist practice where an imaginary companion, or "Tulpa", is created through intense meditation. The practice is often compared with Dissociative Identity Disorder, since the imaginary companion created is viewed to be independent and separate from the individual.
ADe0x TIL that after Booth assassinated Lincoln by shooting him the back of the head, the largest manhunt in US history, involving thousands of troops and countless civilians, tracked him down to a barn. As he attempted escape, Sergeant Boston Corbett killed Booth by shooting him in the back of the head.
GA1Wj TIL that there is a continuous line of doctoral advisor-advisee relationships going back from the present to the 1200s to a scholar named Kamāl al-Dīn Ibn Yūnus. He has more than 190,000 known academic "descendants", including Leonardo da Vinci and mathematicians Fourier, Lagrange, and Hilbert.
OGGQR TIL grapes are toxic to cats and dogs.