September was second warmest for the globe and U.S.; 2015 likely headed for the record books

This past September was the second warmest on record for the globe, according to numbers just released by NASA.

Only September of last year was warmer in NASA’s record, which dates back to 1880. And that was an extraordinarily warm month for the planet. (NOAA will soon issue its own independent analysis of global temperatures during September.)

Meanwhile, the contiguous United States is really starting to heat up, with September coming in as the second warmest in a record spanning 121

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