2017 will be one of Earth's top 5 warmest years, scientists say

This year will almost certainly rank as one of the planet's top five warmest years on record, according to new data from the National Oceanic and Atmospheric Administration (NOAA) and NASA. In fact, the top NASA climate scientist reported Monday that 2017 is likely to be the second-warmest year on record, behind 2016, which in turn displaced 2015 from the top spot. 
NOAA, on the other hand, predicts that, barring an unforeseen, large-scale cold snap, this year will rank as the third-warmest