› added 6 years ago

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TIL that there are only 3 original citrus fruits: pommelo, citron and mandarin. Most other citrus fruits are hybrdis of these 3 (eg. orange= pommelo x mandarin)

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0wo0M TIL of former Congressman Leo Ryan (D), who was assassinated in the events leading up to the Jonestown Massacare
Y7kl7 TIL that rainbows are actually full circles, and half of the rainbow is always over the horizon.
VMZ7p TIL Agriculture is the leading cause of deforestation, with 24% of converted land going to farming. Palm oil however plays an approximately 2.4% part.
9my6 TIL Szechuan peppers cause numbness when eaten because they contain hydroxy-alpha-sanshool, a molecule that binds to cells’ tactile receptors to chemically simulate the same sensation as being vibrated at 50 hertz.
9YkBD TIL that volcanoes generate ~200 million tons of CO2 emissions annually while human activities generate ~24 billion tons of CO2 emissions.