Climate change is not reversible, and in fact, some studies have suggested that the amount of carbon that we've already dumped into the atmosphere guarantees continued climate change for the next 1,000 years ((http://www.desmogblog.com/study-climate-...) . This doesn't mean that current action is meaningless - the… » 7/09/14 4:05pm 7/09/14 4:05pm