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Drones can plant 40,000 trees in a month.

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6pLm TIL that tooth enamel, the hardest and most mineral dense substance in our bodies, is primarily composed of dense rods of hydroxyapatite crystals.
4oQR TIL while governments are OK with using tear gas on their own civilian populations, they prohibit it in war
VMoZ8 TIL that in the UK, over 100,000 knifes have been used to make a 26 foot sculpture of an angel to highlight the countries growing knife crime problem. All the knifes used in the statue had been confiscated by or surrendered to the police. The sculpture is called Knife Angel.
v1BOD TIL: A fake restaurant, 'The Shed at Dulwich', became the highest rated restaurant in London on tripadvisor, received several offers from various companies and was only open for one night to a few guests. They served microvawed food.
D1b4P TIL one of the richest families in history was a German merchant dynasty, the Fuggers. One member, Jackob Fugger (d. 1525) ranks among the wealthiest men in modern history with $400 billion, 2% of Europe's GDP. The name Fugger was originally rendered as, Fucker.