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TIL I learned that in 2007 an initiative called the Great Green Wall was started to restore the vegetation of the Sahel and to stop the expansion of the Sahara. The project is funded by the world bank(most of it). The wall goes across the entire part of Africa from Senegal to Ethiopia

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xV6Y0 TIL In 1986 Jesse "The Body" Ventura attempted to unionize the pro wrestling industry, it was promptly shut down after Hulk Hogan informed WWE chairman Vince McMahon
yVo5V TIL that in the USA, ransom payments to kidnappers are tax-deductible.
gWZ7 TIL during the Cold War, an 18 year old German aviator (with only 50 hours worth of flying experience) illegally flew through Soviet airspace, bypassed their air defences and landed in Red Square, all in order to reduce tensions between the US and USSR.
v6mr TIL: The MAXIMUM entry age for new air traffic controllers to be accepted by the FAA is 30.
Ypnnx TIL that male elephants experience a condition called "musth" in which their testosterone levels are up to 60 times higher than normal. Elephants are so violent during musth that scientists have struggled to study the condition, leaving its cause largely a matter of speculation.