Apple's Phil Schiller has poured water on the theory that iOS and OS X could be combined into one operating system.
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.
Covanta Energy's waste-to-energy facility takes municipal solid waste and produces electricity in a less-polluting way than old-time incinerators.
IST Energy's truck-sized Green Energy Machine will turn trash into electricity and heat at Air Force base in demo project.
With grants from the EPA, innovative techniques are turning food waste into energy to power this San Francisco Bay Area wastewater treatment facility.
Ze-gen, which has a gasification process that can transform construction debris into electricity, raises $20 million in a funding round led by a conglomerate based in Oman.
The company converts municipal solid waste, including sewage sludge, into a solid that can be burned as fuel.
The company plans to open a test facility later this month which will use gasification to convert waste to electricity.
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.
Columbia University researchers estimate 5.2 million U.S. homes could be powered annually by energy derived from non-recycled plastics, and 16.2 million from municipal solid waste.