Hansen is nothing more than a bad scientist trying to justify his existence and not have to face the budget knife.
These idiots assume that the atmosphere is some kind of static environment where no kind of chemical changes take place. They are wrong because it is dynamic and constantly changing. They totally seem to ignore the 2nd Law of Thermodynamics.
I'm a meteorologist that disagrees completely with their "science". One need only ask, "What is the source of heat?" If you view plots of solar activity versus temperature you find a near one-to-one correlation. It's one of those scientific "DUHS". Dr. Neil Frank, former director of the National Hurricane Center, gave a presentation on this at the 1995 National Hurricane Conference. Dr. Bill Gray, Colorado State University climate specialist, also stated his opinion of global warming with, "Nuts!" There is a serious disconnect going on here...whoever said scientists are completely honest and ethical? They are trying to get funding by crying "The Sky is Falling!" or in this case "The air is warming!" Give me a break!