2017 was the 2nd hottest year since 1880, when global measurements first became possible.
2017 was among the hottest years ever recorded, government scientists reported Thursday.
The year was the second-hottest in recorded history, NASA said, while scientists from the National Oceanic and Atmospheric Administration reported 2017 was the third-warmest they have ever recorded.
The two government agencies use different methodologies to calculate global temperatures, but by either standard, the 2017 results make the past four years the hottest period in their 138-year archive.
