Hill: A new report finds evidence that human-induced climate change played some role in last years U.S. heat waves and several other 2012 extreme weather events worldwide.
The study released Thursday, written by scientists from 11 nations and edited by U.S. and British federal scientists, explored 12 extreme weather events and found some human influence in about half of them.
The report shows that the effects of natural weather and climate fluctuations played a key role in the intensity and evolution...