If the environmental movement truly believes that activities of humans (e.g., carbon output) is actually harming the environment, then why to they resist concrete actions that can actually help to resolve this problem, such as:

- dealing with overpopulation.

- the wider application of nuclear fission technologies (e.g., 4th gen plants) to generate electricity and transportation fuels.

I suppose that hollow feelgood gestures are easier than facing up to reality.  If it is a problem then let's do something about it beyond holding marches and singing songs.  Trust me; I've been to Green Party meetings where any suggestion to actually solve the problems are shouted down and booted out.  For me I'll sit there with my 60% nuclear + 25% hydroelectric powered lights blazing and feeling no guilt.