But the companies are also doing good as well. Google, Yahoo, and Microsoft have located data centers near large sources of renewable energy, for example. Google purchases carbon offsets to make up for coal use. And all companies are doing an increasingly good job of making sure their data centers are very energy-efficient. The fact that they're doing it to help their bottom line doesn't matter --- it does help reduce global warming.
Still, Greenpeace is right that the industry needs to locate data centers near sources of renewable power whenever possible, and that it should push for changes to cut our reliance on coal.
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