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In Berkeley, Calif., All Power Labs is turning out machines that convert cheap and abundant biomass into clean energy and rich, efficient charcoal fertilizer.
A gasification system is set to convert more than 90 percent of the Denver Zoo's waste into energy that can, among other things, fuel a rickshaw.
After shutting its biofuel plant in January, Range Fuels is being forced to sell its assets after failing to make ethanol from wood chips at scale.
A visit to a modern waste-to-energy plant shows they are far cleaner than older incinerators and an alternative to landfills, but shouldn't displace efforts to increase recycling.
Do you need coffee to get going every morning? So does this car, which this month broke a Guinness World Record "for vehicles run on gas from organic waste."
The garbage hauler is investing in start-ups to wring valuable products from waste, including electricity, liquid fuels, and chemicals.
The chief sustainability officer of utility Tata Power sees the potential for some clean-energy technologies for distributed power generation serving the "bottom of the pyramid."
Plain old microbes and some more experimental technologies can help municipalities cut garbage tipping fees and capture valuable bio-energy and compost.
Genomatica partners with Waste Management to develop chemical products from syngas, the companies announce last week.
IST Energy's truck-sized Green Energy Machine will turn trash into electricity and heat at Air Force base in demo project.