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TIL there is a secret room inside Mt. Rushmore that contains porcelain enamel panels with text from the Declaration of Independence, the Constitution, and the Bill of Rights sealed in a teakwood box, placed in a titanium vault, and sealed shut under the weight of a 1,200 pound granite capstone.

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0wnEM TIL that the exoplanet Kepler-70b has an average temperature hotter than the Sun's surface as a result of falling into its host star and subsequently surviving
nejkW TIL one of the most brutal prisons in the US was Angola, Louisiana, which was run like a plantation. In the 1930s, hardened prisoners broke down upon learning of their sentence there. At one point, 10% of Angola prisoners were stabbed.
0wdvM To conform to the New Strategic Arms Reduction Treaty, the U.S. must cull its deployed nuclear strategic warheads by roughly 700. Once the National Nuclear Security Administration’s scientists inspect each warhead to determine the best way to take it apart, it goes to Pantex Plant in Texas, the only facility cleared to disassemble nukes.
nW5YP TIL Daniel Tammet, an autistic savant who speaks 10 languages, described how numbers appear to him in terms of shape, color, and texture. For him, 289 is ugly, 333 is attractive, and pi is beautiful.
XkRE TIL that The Riddler almost became the primary villain in The Dark Knight Rises. He would’ve been played by Leonardo DiCaprio