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The U.S. has seen a dramatic temperature increase since the first Earth Day

Axios · Andrew Freedman · last updated
Data: Climate Central/RCC-Acis.org/ NCEI; Note: Average temperatures rounded up to nearest tenth. No data available for Hawaii; Map: Jacque Schrag/Axios Since the first Earth Day on April 22, 1970, the U.S. national average temperature has climbed by 2.6°F, a…