The projection that U.S. farmers will grow less corn this year is bad news for ethanol producers.
A novel hybrid engine could slash fuel consumption.
New infrastructure may help launch electric cars in Israel and Denmark.
A new solar cell is 27 percent more efficient without being more expensive to make.
Nanomaterials could be used for lower-emission cars and solar panels.
Communications technologies will make Boulder's grid more efficient and environmentally friendly.
A California startup is cutting by half the amount of costly silicon used in solar panels.
Researchers are working on solar cells that use a novel organic dye.
Mimicking the bumps on humpback-whale fins could lead to more efficient wind turbines.
GM and Toyota leaders admit that hydrogen fuel cells have serious problems.