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101

TIL that fireflies are facing extinction in the United States.

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x4b5 TIL Violent crime in the US and Europe was at its highest in areas with the most lead pollution. Violent crime peaked 20 years after lead additives in petrol and paint were banned, before declining thereafter.
o5JY TIL that Sean Connery wore a toupee in all of the James Bond movies because he started balding at age 21.
KO5J9 TIL that humans have a free floating bone in the neck that anchors the tongue in place and is believed to greatly contribute to humans being able to talk in the sophisticated manner that we do today.
N7Y8M TIL Sharks are able to feel the harts of fish beating, so playing heavy metal (or other music with low, rumbling frequency) will attract sharks, as they think the music is fish.
4YNX TIL that South Park: Bigger, Longer & Uncut was originally rated NC-17, and every time the creators sent it to MPAA for a re-rating, they edited in more vulgar scenes. Jack Valenti, president of the MPAA, said that he regretted not rating it NC-17.