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Declining UV light on the N. Hemisphere. Winter is coming t.co/qfhRx8dxwf
— Gregor Peter (@L0gg0l) September 25, 2020
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Declining UV light on the N. Hemisphere. Winter is coming t.co/qfhRx8dxwf
— Gregor Peter (@L0gg0l) September 25, 2020