Scientists estimated global average carbon dioxide concentration at 397.2 parts per million (ppm) in 2014, as the global growth rate of carbon dioxide continues to accelerate.
It was the sixth-warmest August on record for the globe. It's very likely that the year will wind up among the 10 warmest years on record.
Just a few days ago, on January 26th, 2017, we saw something in the U.S. climate that we hadn’t seen since March 2011.