1-in-a-Million Odds Link Global Warming and Record Heat

For 2014 alone, there's a one-in-a-million chance that the monster heat record occurred only from natural climate variability. "The risk of heat extremes has been multiplied due to human greenhouse-gas emissions, as our data analysis shows," study co-author Stefan Rahmstorf said in a statement. "The anomalous warmth has led to unprecedented local heat waves across the world, sadly resulting in loss of life and aggravating droughts and wildfires," said Rahmstorf, a professor at the Potsdam Instit