Just think of it as a battery that can also take you to the shops. Steve Jurvetson/Wikimedia Commons

How electric cars can help save the grid

By boosting the demand for energy from the grid, electric cars could help create an incentive for more renewable energy investment, while smoothing over issues with supply and demand.
In the 1970s, refineries in the Middle East controlled the world’s flow of oil. Not any more. National Iranian Oil Company/Wikimedia Commons

OPEC v oil prices: how the world’s biggest oil cartel lost its power

With oil prices on the slide, members of the once-dominant Organization of the Petroleum Exporting Countries (OPEC) decided last week not to attempt to rally them by cutting production, leaving the Brent…

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