Can man doing anything about GW?
Answer 12: Almost certainly not quickly, and maybe not much at all. Some of the gases which are warming the planet have very long lifetimes, and some of the practices which lead to them are vital to human life. All in all, it is hard to believe that we will quickly (or hugely) reduce the amount of the pollutants we will produce. And yet the task may not be as daunting as is sometimes supposed.
