Energy & Green Tech

Doing the math on a solar-powered future

Physicist Anders Carlsson, at Washington University in St. Louis, and Sid Redner of the Santa Fe Institute have created a new mathematical model to describe the most reliable, efficient and cost-effective way to harness solar ...

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

How West Africa can expand power supply and meet climate goals

Not too long ago, when the idea of solar and wind energy was still hotly debated, critics used to point out the limitations of these energy sources: the sun doesn't always shine and the wind doesn't always blow. But nowadays ...

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