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TIL the Ferns can be dangerous to humans and animals. Consuming fern shoots (a delicacy in some places), inhaling the spores or skin contact can cause asthma and allergic reactions. Long term exposure can cause cancer of the digestive system (when eaten) and lung and blood cancer.

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D1bAe TIL After losing her husband and four children to yellow fever, and her job to the great Chicago fire, Mary "Mother" Jones became a labor organizer. She organized a march of working children from Philadelphia to New York, and her speeches provoked workers to organize during the Coal Wars.
lokQG TIL: While it takes 8+ minutes for a photon to travel from the sun to the earth, for the photon it leaves the sun and arrives at the earth in the same instant. Things that travel at the speed of light do not experience time.
ANReg TIL for the encore of their concert in Paris, "Ni**as in Paris" was played ELEVEN times. In a row.
w55Y TIL you don’t need a drivers license to compete in NASCAR.
b9Xjj TIL that Olaf was a complete and utter asshole in the original script of Frozen, kinda like a villain but not actually one, and screenwriter Jennifer Lee hated OG Olaf so much that every time he appeared in the script she would write "kill the fucking snowman".