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"We Brake 4 Climate" from What We Know on Vimeo.

"The evidence is overwhelming: levels of greenhouse gases in the atmosphere are rising," the report says. "Temperatures are going up. Springs are arriving earlier. Ice sheets are melting. Sea level is rising. The patterns of rainfall and drought are changing. Heat waves are getting worse as is extreme precipitation. The oceans are acidifying."

The planet has warmed by about 1.4 degrees since the late 1800s as carbon dioxide and other heat-trapping gases have built up in the atmosphere from human activity. If emissions keep climbing, temperatures could rise another four to eight degrees over the century, the report says, pushing the climate beyond the range experienced in millions of years and increasing the odds of irreversible damage.

- Los Angeles Times