Existing technology can produce biodiesel fuel from municipal sewage sludge that is within a few cents a gallon of being competitive with conventional diesel refined from petroleum. Intro theme and music by Kevin MacLeod. Creative Commons licensed audio from freesound.iua.upf.edu.

Developing new sources of energy: Producing cost-effective biodiesel from sewage sludge

Taking inspiration from trees, scientists have developed a battery made from a sliver of wood coated with tin that shows promise for becoming a tiny, long-lasting, efficient and environmentally friendly energy source. Their report on the device — 1,000 times thinner than a sheet of paper — appears in the journal Nano Letters.

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Developing new sources of energy: Producing cost-effective biodiesel from sewage sludge

Developing new sources of energy: Producing cost-effective biodiesel from sewage sludge