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TIL Concrete is the second most consumed material in the world after water.

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xVaP5 TIL Snails’ teeth are the strongest natural material on Earth, able to withstand pressures high enough to turn carbon into diamond.
W5PX TIL that when the USS West Virgina was finally raised after being sunk during the bombing of Pearl Harbor, deceased men were found in an airtight storeroom. On the calendar, 16 days were crossed off in red pencil.
kOgxE TIL The anarchist thinker Peter Kropotkin was a military officer turned geologist. In 1871 Kropotkin explored the glacial deposits of Finland and Sweden. In 1873, he published a map and paper in which he showed that the existing maps entirely misrepresented the physical features of Asia.
gr6Jb TIL that Abraham Lincoln was offered honorary citizenship of the Republic of San Marino in 1861. He accepted, writing “Although your dominion is small, your State is nevertheless one of the most honored, in all history.”
5Ypgn TIL there is a unique species of fish with a transparent, fluid-filled dome on its head, through which the lenses of its eyes are visible. It had not been photographed alive until 2004.