Spanish solar energy: A model for the future?

There is no free fuel. Whether you drill for and refine oil, or manufacture and maintain a panel to collect solar energy and convert it into electricity, it takes energy to make energy. In Spain's Photovoltaic Revolution: ...

Researchers Work to Make Wood a New Energy Source

(PhysOrg.com) -- Is wood the new coal? Researchers at North Carolina State University think so, and they are part of a team working to turn woodchips into a substitute for coal by using a process called torrefaction that ...