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A mild-mannered biker triggered a huge debate over humans' role in climate change – in the early 20th century

  • Written by Sylvia G. Dee, Assistant Professor of Earth, Environmental and Planetary Sciences, Rice University
A mild-mannered biker triggered a huge debate over humans' role in climate change – in the early 20th centuryGuy Stewart Callendar connected carbon dioxide concentrations with rising temperatures.GS Callendar Archive, University of East Anglia

In 1938, a British engineer and amateur meteorologist made a discovery that set off a fierce debate about climate change.

Scientists had known for decades that carbon dioxide could trap heat and warm the planet. But...

Read more: A mild-mannered biker triggered a huge debate over humans' role in climate change – in the early...

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