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TIL Bacteria are thriving in the sky — and they influence the weather

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69ALQ TIL about the Sterile Insect Technique (SIT), the most environmentally friendly form of pest control. Disease carrying insects, including mosquitoes and tsetse flies, are sterilized with radiation and released to mate with wild females, rendering their eggs useless.
oR5Lr TIL in the 1960s, Swiss rivers were filthy and unsafe. A 1963 typhoid outbreak in Zermatt killed 3 and sickened over 450. A 1967 initiative led to a 1971 law on wastewater treatment. By 2005, 97% had sewage access.
5VLdn TIL America has had many large denominations ($+100), including a $100,000 bill
ExAP TIL There is Book Store that takes up a full city block in Portland, Oregon.
MN70 TIL that the Okinawa Japanese have a philosophy of eating 8/10 of the amount that makes you full. 29% of them live past the age of 100.