Record 2012 temperatures in U.S. provide evidence of global warming

Opponents of the climate change 'theory'—that human activity is raising global temperatures—have an increasingly difficult case to make, in light of recently released scientific evidence. 2012 was the "warmest and second most extreme year on record" for the contiguous U.S., according to data published by the National Climatic Data Center, a branch of the National Oceanic and Atmospheric Administration... To continue reading, subscribe to Science Recorder today.