Energy & Green Tech

Major Japan railway now powered only by renewable energy

Tokyo's Shibuya is famed for its Scramble Crossing, where crowds of people crisscross the intersection in a scene symbolizing urban Japan's congestion and anonymity. It may have added another boasting right.

Engineering

Portable generator powers small safety devices

A new stick-like, water-based device can convert energy from movement into electricity. The technology, which was reported in the journal Science and Technology of Advanced Materials, could be used to power portable devices, ...

Energy & Green Tech

GM expands market for hydrogen fuel cells beyond vehicles

General Motors is finding new markets for its hydrogen fuel cell systems, announcing that it will work with another company to build mobile electricity generators, electric vehicle charging stations and power generators for ...

Energy & Green Tech

Winter freeze power resources charted in time-lapse video

What happened to electrical power in Texas during last February's freeze? A new time-lapse video of electricity generation created by experts at Rice University's Baker Institute for Public Policy offers an hour-by-hour picture ...

Energy & Green Tech

Who pays and who benefits from a massive expansion of solar power?

Electricity generation produces a quarter of U.S. greenhouse gas emissions that drive climate change. The electric grid also is highly vulnerable to climate change effects, such as more frequent and severe droughts, hurricanes ...

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