These guys are really cool. I found out about them from an artist on MWL that may actually get some sponsorship from them for an eco tour across the US in an eco van. Look out for more on that. For now, check out APE:
Through music and the arts, APE aims to achieve permanent reductions in greenhouse gas emissions to levels that minimise further degradation of ecological systems and human livelihood.
APE recruits internationally known musicians and artists through albums, concerts, art exhibitions and art related projects to raise awareness of climate change and funds for campaigns and disaster relief.