Sunday, 7 October 2012

Environment

As global warming has thawed ground in northern Russia that is usually permanently frozen, a variety of mammoth remains have been uncovered. Researchers say this is the best-preserved one ever found.

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At a glance, the environmental benefits of electric vehicles seem obvious. No exhaust pipe means no harmful pollutants? However, it's where the electricity comes from to power the car which is a huge factor. Recent research shows that the manufacturing of electric cars is more environmentally taxing than producing conventional cars. [Norwegian Institute of Science and Technology] Electric vehicle production can produce twice as much climate change potential as the production of conventional cars.

Much of the performance of EVs environmentally has to do with how long they're kept on the road. They are efficient, so the longer they stay on the road, the more they can make up for the impacts of their production. And, in places like Europe where electricity is generated from a wide variety of sources, including renewable energy, they do represent a 10% to 24% decrease in global warming potential (GWP) relative to conventional diesel or gasoline vehicles assuming lifetimes of 150,000 km.

If you live somewhere with oil or coal-fired power plants, then having an electric car is actually far worse for the environment than a comparable gas or diesel car. This includes many areas of the US.

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