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TIL Israel merged the front half of a damaged rare 2 seat F-15 with the back half of an obsolete retired single seat F15. When they asked Boeing for advice Boeing never responded thinking the Israeli air force was joking.

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via reddit.com

loxlA TIL that particle physicist John Ellis lost a bet and had to include the word "penguin" in his next scientific paper. After struggling to find a way to include the word, he "smoked some illegal substance" which gave him the inspiration for the now important Penguin Diagrams.
YpgbB TIL about the Gympie Gympie bush (or “Suicide Tree”). It delivers a sting described as “like being burnt with hot acid and electrocuted at the same time”. One man was stung and after 3 weeks of agony, was driven “as mad as a cut snake”. Another shot himself after using the leaves as toilet paper.
9wW4D TIL that Ireland is a third-world country
6EDbX TIL a U of Quebec study of 320,000 patients with a history of alcoholism found that patients with high cannabis use had a better defense against liver disease than non-users. Non-pot users had a 90% chance of liver disease; light pot users had an 8% chance; heavy pot users had a 1.3% chance.
ZwQ TIL that the novel Fahrenheit 451 was first published in Playboy magazine.