What a group of morons, and they want everone else to be like them. Well guess what, we are just like them because we don't do any of this moronic stuff any more than they do.
Riiiight. They have good paying jobs (or could have, if they chose to work), autos, airconditioned housing, dvd players, etc. But they don't want Africans, Asians, etc to "be like them," i.e. prosperous, comfortable, healthy and well fed. That would be, like, an environmental disaster if billions of brown people were "consuming" like they (the elitist Western lefties) do.
In short, hundreds of millions must live in degradation and/or under oppression (and frequently die in large quantities) for the sake of "environmentalism". And while the left condems the underpriveledged to their mud huts, they ignore the abundant evidence that poverty is the greatest threat to the environment.
Better that millions upon millions die, and hundreds of millions suffer, than the lefties have to admit that capitalism works.
Living in tree trunks might hurt the nice trees. Burning wood in order to cook, even if it's deadfall, creates smoke which contributes to global warming - not to mention destroying habitat for the critters that made that deadfall their home. Living in a cave...yeah, living in a cave would be stealing the homes of bears and other four-legged people that live in caves.
No wonder they're always saying they want the human race to die out immediately, if not sooner...