Crude oil from pig manure?
US - Yuanhui Zhang has smelled the future of oil, and it stinks. The pungent, earthy scent emanates from swine pens that professor Zhang's graduate students visit regularly at the University of Illinois. Holding spades in gloved hands, they collect buckets of moist pig poop and carefully drive it to a lab on the edge of campus.
17 August 2006
2 minute read
