After a summer of record-breaking heat, vast swaths of the United States are now grappling with extreme cold as a brutal Arctic blast brings snow squalls, deadly ice and life-threatening wind chills.
Human-caused global warming has been increasing faster and faster since the 1970s. Global average temperature compared with the middle of the 20th century 2010 to present +1.0°C 1970 to The world is ...
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