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TIL Australian gum-trees have evolved to have highly flammable leaves and bark to encourage bushfires. The leaves and bark are full of oil, making bushfires spread easily and quickly.

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N7Oge TIL in 2003, North Korea suggested several symbols which were included in international Unicode, later becoming emojis. They requested ☕ to mark tea houses on maps and ⚐ & ⚑ for military battles and victories. They also requested ⬆, ⬇, ⬅ (but no right arrow), ☔, ⚡, ⚠ and ⏏.
4Nnw TIL the first documented case of cancer dates back to Ancient Egypt, in 1500 B.C.
a99Z TIL Primus is the only band with its own genre tag on iTunes/Winamp.
6AXl TIL that a Mythbusters experiment once resulted in a cannibalized mouse
Eko7 TIL-The PowerPuff Girls were originally a short called “ Whoop Ass Stew” and that “Chemical X” was actually a can of Whoop Ass, but eventually it became a cartoon on Cartoon Network with the names changed to be appropriate for children.