CNET

When thinking about the right way to invest in renewable energy, it's important to realize the different land use impacts of solar, wind, biofuels, along with coal and nuclear, says Clinton Andrews of Rutgers University.

A new report from the American Wind Energy Association (AWEA) says that the number of small wind turbines in the U.S. has grown considerably over the last year, adding 20 megawatts of production.

The U.S. Federal Government has released a new online tool to help in the collection of feedback and ideas from the general public.

PG&E CEO Peter Darbee says that it wouldn't take very many all-electric cars to create a serious drain on local power generators.

Some transit agencies keep it under wraps, while others share it widely. Three cities in the U.S. show how the availability of transit arrival data is a wild frontier.

The U.S. Military's Defense Advanced Research Projects Agency is investing in a program that looks to create 3D imagery of urban areas and the common spaces and objects that could pose threats or provide advantages to military operations.