
Poo Power!
Efforts to cut carbon dioxide emissions and energy costs are giving rise to . . . poo power! That’s right – for the past few years engineers have been implementing new ways to convert waste products into usable biofuels. The process involves a series of chemical reactions know as anaerobic digestion, which ultimately produces a biogas composed largely of methane and carbon dioxide.

![]() Driving Among the CloudsHave you ever been stuck in traffic and wished that your car could just take to the skies? In 2011, the Transition may make it happen. It’s a drivable aircraft currently being developed by the company Terrafugia. |