Power of the Future: 10 Ways to Run the 21st Century: "Scientists are racing to perfect greener sources of energy to improve the environment and reduce dependence on oil and other fossil fuels. Some predict a hydrogen economy. Others say solar is the way to go. Wilder schemes involve sky-high wind turbines or antimatter engines. LiveScience explores the expectations, myths and realities of 10 top possibilities."
A look at 10 power strategies including solar, hydroelectric, nuclear, and ocean thermal energy conversion (OTEC).