Forbes: People who worry about human-caused climate change are willing to pay higher energy bills to help stop it, but only up to 5 percent higher, or about $5 on the average American energy bill, according to a Harvard political scientist who has conducted a comprehensive survey of attitudes toward energy and climate for the last 12 years. Global warming is a huge problem for humanity that is foreseeable and possibly preventable, which makes it an excellent public policy problem to work on, and a depressing...