City buses turn to sewage for 'clean' fuel

Can the key to "clean" energy be found down in the sewer? That's the idea in Oslo, where city officials soon plan to introduce buses that run on biofuels extracted from human waste.

Honda says to open bio-ethanol research centre

Japan's Honda Motor Co., seeking a boost in the race to build greener automobiles, said Thursday it would open a research centre to develop and produce bio-ethanol fuel from non-edible plant matter.