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TIL that blue reflectors on the road mean a fire hydrant is nearby.

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0w9n1 TIL some potato chips are green because a section of a potato can break through the ground and start growing chloroplasts. Most of the time these green potatoes are separated from production due to solanine, a natural poison that can be produced from a green potato.
VM94Q TIL: Eugene Debs was a 5 times socialist candidate for president, a union organizer, and orator. While at his sentence hearing for sedition, he said, "While there is a lower class, I am in it, and while there is a criminal element, I am of it, and while there is a soul in prison, I am not free."
VJ6p TIL Heath Ledger kept a Joker Diary. In it he wrote as the Joker and included a list of things he believed the Joker would find funny including blind babies, geniuses with brain damage, and sombreros
eJmn TIL the passports of Hong Kong (SAR), South Korea, Israel, and Chile are the only ones to provide visa-free access to all of the European continent.
X0Xdr TIL that Arthur Hill Hassall (1817– 1894) was a British physician, and a pioneer in the use of the microscope as a tool in medicine and public health. In 1846 he published a two-volume study, ‘The Microscopic Anatomy of the Human Body in Health and Disease’, the first English textbook on the subject