Grist: The U.S. Senate race in Colorado - which is a dead heat in the latest polls - pits a climate hawk against a climate change denier. The outcome may hinge partly on environmental issues, and it may also determine control of the Senate.
Republicans need to pick up six seats to take the Senate. Luckily for the GOP, Democrats have to defend a number of seats in red and purple states, many with significant fossil fuel interests, including West Virginia, South Dakota, Montana, Arkansas, Louisiana, North...