Antarctica registers record temperature of over 20 C

Scientists in Antarctica have recorded a new record temperature of 20.75 degrees Celsius (69.35 Fahrenheit), breaking the barrier of 20 degrees for the first time on the continent, a researcher said Thursday.

Heat waves hit heat islands hardest

Extreme summers like that of 2012—which saw record temperatures in cities across the U.S.—may be atypical, but experts say they will return, especially as the planet warms under climate change. And as they do, cities ...

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