I recently saw a documentary about our energy usage and how we derive our energy. Obviously it was a pessimistic viewpoint but I think it might actually be true (It's called Blind Spot, I recommend it). One thing about it that spoke to me was that people don't worry about climate change because "the smart people will find a solution." I've unconsciously held this attitude as well until I realized that I'm actually at the level where I could be and quite possibly am one of the "smart people" those people refer to. Being a "smart people" I feel somewhat obligated to try to, for lack of a better phrase, stop humanity from killing itself. After a long conversation with some friends about how, in the oh so many ways, we are screwing ourselves my friend mentioned the idea of, if anything would stop the planet from becoming a death trap, it would be carbon sequestration. He then went on to say that with the stage that it's at now, it's almost hopeless. Almost. So my question is: Is he right? Could carbon sequestration undo the damage that has been done and is being done? How likely/unlikely is it to become a feasible solution? If it's not feasible, are there any other things that could save humanity? Edit: Just realized I probably should have posted this in the 'Earth' section.