2017 was the second-hottest year on record: NASA
2017 was Earth's second-hottest year since 1880, according to a global analysis by NASA. This comes after the years 2014, 2015, and 2016, all consecutively broke records for the hottest years, which NASA attributed to increased carbon dioxide and other human-made emissions. Further, 2017 was the hottest on record without the short-term warming influence of El NiÃ±o in the Pacific.