Ethanol from corn consumes three times more water than previously thought.
As legislators discuss major new legislation for moving the United States away from its dependence on fossil fuels, Daniel Yergin, chairman of Cambridge Energy Research Associates, reflects on lessons that can be learned from previous shifts in energy use. Yergin recently released a new edition of his Pulitzer Prize–winning book, The Prize: The Epic Quest for Oil, Money and Power.
Mazda's CEO changes his tune, promising hybrids and EVs by 2015.
Tiny boats made of nanomaterials are powered directly by sunlight.
A UC Berkeley researcher uses a magnifying glass to focus sunlight onto a small plastic boat. Nanotubes at one end of the boat absorb the sun’s heat, propelling the boat through the water. The second video shows a rotor that works on the same principle. A similar design could be used to make simple solar-powered pumps.
Big Oil has a limited attention span for renewables.
The automaker wanted U.S.-based manufacturing and a flexible battery design.
An animation shows the components of a new modular battery system for electric vehicles and plug-in hybrids.
The device harnesses both sunlight and mechanical energy.
A new heater cable lowers the cost of separating oil-like fluid from rock.