Philadelphia Inquirer: With a new study showing 97 percent of scientific papers on climate change since 1991 agree that fossil fuels are largely responsible, the doubters need to stand aside so public-policy initiatives to protect the Earth can proceed. There is as much heat-trapping carbon dioxide in the atmosphere now as there was in the Pliocene Age, three million years ago, when oceans were 70 feet higher and temperatures warmer. Carbon dioxide levels are 41 percent higher now than during the Industrial Revolution...