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TIL Anne Frank's diary entered the public domain the same day as Hitler's Mein Kampf. And that a copyright dispute still swirls around the diary.

Read more theverge.com

via reddit.com

wa6o TIL that losing an hour of sleep when daylight savings puts the clocks forward causes a 25% increase in heart attacks on the following Monday. They reduce by 21% when clocks go back.
5YGB9 TIL that researchers in South Africa encountered seals that forcibly copulated with King Penguins and on one occasion the penguin was killed and devoured as well.
P1QlJ TIL the US Navy operated two coal fired steam paddle wheel aircraft carriers in the great lakes during WWII
b6pLp TIL that in 1966 the glass roof of the Houston Astrodome was painted to reduce glare. However, this reduced the amount of sunlight in the stadium and most of the grass died. A synthetic grass surface called ChemGrass was installed in its place, and Astroturf got its name.
9YxOM TIL there's a pirate museum in St. Augustine FL that displays not only one of two authentic Jolly Roger flags known to exist, but also the only known treasure chest that actually belonged to a pirate.