Just came across this article about some blokes making bio diesel from algae that grows on human poo!
The bio diesel, made from wild algae grown on human sewage
In terms of climate change bio diesel is no silver bullet by any means. Transport does contribute a great deal towards greenhouse gasses - so low emission fuel would be a good step in the right direction as long as it doesn’t involve clearing large tracts of land for more dodgy mono-cropping of canola.
Who knows though - maybe poo algae is the answer!
