By Carlos Suarez and Denise Royal, CNN Read on »
U.S. Secretary of Transportation Pete Buttigieg has found himself having to explain to Republicans the difference between seasons and the phenomenon of global climate change. The issue came to the forefront during a recent congressional hearing when Buttigieg was asked about the percentage of carbon dioxide in the atmosphere.
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By Carlos Suarez and Denise Royal, CNN 
U.S. Secretary of Transportation 
