How can we save the world when some of the cleverest minds think that what they are doing is saving the world, when it maybe it's not? I watch a discussion group that design fuel efficient stoves largely for impoverished areas. There is a discussion going on now (and it keeps popping up) about dung burning stoves. I casually mentioned that dung belonged on the ground. The response was somewhat alarming. Anyway, here is a typical statement Note that this guy (although most don't) at least recognises that the scientists disagree with him. Of course, he dismisses them with a sweeping statement. What more effective way is there? But he is the guy that is designing the stoves so that they are safer and more efficient. A lot of the people on this list are in aid organisations. I think permies outnumber stove designers, so maybe we can get ahead of them.