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TIL a rose bush can change color due to grafting. Often, any color of rose is grafted onto a hardier rootstock, like the Dr. Huey variety. The grafted bush can die, and the rootstock grows again and produces a dark red rose, no matter what color the bush was before.

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jNaZE TIL of a woman who nearly lost custody of her three children when DNA tests in a paternity test proved her ex-husband was the father, but ruled her out as the mother. She had a rare condition called chimerism, where she absorbed her paternal unborn twin in the womb, and carried two sets of DNA.
OoZBX TIL that "it was a dark and stormy night," a catchphrase that has become shorthand for bad writing, comes from the opening line of the 1830 novel "Paul Clifford" by Edward Bulwer-Lytton. The phrase was first used in print by Washington Irving in his 1809 "A History of New York."
X008k TIL David Lunt revolutionized amateur astronomy by introducing the first hydrogen-alpha solar telescopes for consumers in the late 1990s. Through his telescopes, the ruby-red Sun looks alive, with prominences jutting from the limb, and bright flares erupting around sunspots
9byM TIL The FBI sent a letter to Martin Luther King Jr. suggesting that he commit suicide within 34 days or have his sexual exploits exposed to the nation.
Egnjd TIL years before playing Dracula, Bela Lugosi had served as a lieutenant in World War I. At one point, he was helping protect a forest and left his post at a tree to give an officer first aid. When he came back, he found the tree to have been blown into many pieces and wept out of gratitude to God.