FILE - In this Saturday, July 22, 2017, file photo, a polar bear stands on the ice in the Franklin Strait in the Canadian Arctic Archipelago. In a year of cataclysm, some world leaders at September 2020's annual United Nations meeting are taking the long view, warning: If COVID-19 doesn't kill us, climate change will. With Siberia seeing its warmest temperature on record this year and enormous chunks of ice caps in Greenland and Canada sliding into the sea, countries are acutely aware there's no vaccine for global warming. (AP Photo/David Goldman, File)