This just in: The global average temperature in September was the warmest in a record dating back to 1880, according to an update from NASA’s Goddard Institute for Space Studies. That makes it two months in a row: August was also the hottest on record by NASA’s reckoning.
Later this week, the National Oceanic and Atmospheric Administration will release its own, independent calculation of how September 2014 stacked up. Sometimes NOAA’s calculation differs. (But this month, I wouldn’t bet o