Tidal power

The IPCC foresees swiftly expanding alternative energy, defines cookstoves as "renewable" and omits nuclear

A large dam, gate or lock to manage tidal flows could help locals cope with anticipated sea level rise from climate change

Dean Kamen's FIRST robotics program celebrates 20 years of turning education into an arena sport

Tidal power may be destined to remain a niche player in the U.S. energy portfolio, but the low-carbon energy source has one key advantage over wind and solar--it's as dependable as the moon's phases

But now comes the hard part: making phones, PCs and other mobile gadgets that can take advantage of the broadcast spectrum's strong signals

Pretty well, once the technology to automatically respond to peak demand and store renewable energy matures

A new device is designed so that when it's hit by big waves, it writhes snake-like in the water and produces electricity

Scientists attempt to harness the power of microbes to produce electricity and fuels

Several organizations are hard at work developing and testing tidal-harnessing technology as a source of green energy

One small island in Denmark is technically 100 percent powered by sustainable sources of energy. Could the experiment succeed anywhere else?

A new model for the inner workings of the Saturnian moon proposes that it only acts out every billion years or so, and we just happen to be around to see it

High selenium levels in power plant wastewater may pose a risk to people and wildlife