A new type of fuel cell could make CO2 storage cheaper, but it could also prove to be a good way to pump more oil out of the ground.
A hydrocarbon-sorting material could replace energy-intensive oil refining steps.
Tesla Motors' loan repayment is a bright spot for the DOE loan program.
A $300 million project seems to have failed to produce a cheap way to make fuel from algae.
A 19th-century idea might lead to cleaner cars, larger-scale renewable energy.
Building solar and wind projects in the wrong place is wasting billions of dollars in Europe.
An International Energy Agency report says investments in oil technology will lead to a worldwide supply boom.
New prediction models can allow utilities to rely more heavily on wind and save millions.
Composite and 3-D-printed components will mean jet engines that use 15 percent less fuel.
We've hit 400 ppm of carbon dioxide, but we won't know what that means for decades.