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.

Energy & Green Tech

Are wind and solar power really more expensive and less reliable?

Not that long ago, critics of renewable sources of energy had a point when they claimed wind and solar power cost more and were less dependable than fossil fuels, mostly because they depend upon the wind blowing and the sun ...

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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