Northern Hemisphere summer was hottest on record, scientists say
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The Northern Hemisphere just sweltered through its hottest summer on record, according to data released Monday by the National Oceanic and Atmospheric Administration.
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The period from June through August was 2.11 degrees Fahrenheit warmer than average in the Northern Hemisphere, while globally, this August ranked as the second-hottest since record keeping began in 1880.

The worrying milestones come as historic wildfires and extreme weather events in the U.S. have sharpened focus on global warming and the catastrophic impacts of climate change.

August was particularly steamy for the planet. Average global land and ocean surface temperatures last month surpassed the 20th-century average of 60.1 degrees by 1.69 degrees. This makes it the second-warmest August on record, trailing only August 2016, according to scientists at NOAA's National Centers for Environmental Information.

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Some regions, however, felt the…
Denise Chow
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