There are a range of suggestions
...but there's no agreed-upon solution.
Interesting fact: both the corporate leaders I've interviewed and the environmental advocates I've talked to are calling for a price on carbon. The former don't like the market instability that a lack of one causes, and the latter obviously don't like increased emissions period. The lack of progress on this is political.
The largest companies will continue to reduce their (and their supply chain's) environmental footprints (because it affects the bottom line) and environmental folks will continue to reduce their consumption to keep their lives in line with their beliefs. But we won't see a true lockstep initiative until we get a little top-down regulation that forces everyone to get in line.
