Huffington Post: While Republican Senate candidates are nearly unanimous in their desire to either ignore or deny the existence of global warming, the major Democratic Senate candidates this cycle are more of a mixed bag. Those in tough races in more conservative-leaning states avoid the issue of global warming or climate change on their websites. They include Sens. Kay Hagan (N.C.), Mark Begich (Alaska), Mark Pryor (Ark.) and Mary Landrieu (La.), as well as Kentucky candidate Alison Lundergan Grimes. Those hailing...