Sometimes two problems can cancel each other out. Carbon dioxide emissions from power plants could be put to good use, preventing fracking chemicals from contaminating drinking water supplies. Image: brims1285
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What caused the largest mass extinction of them all? A meteorite strike like the one that seems to have sealed the fate of the dinosaurs? Volcanic or tectonic convulsions?The ravages of a humble microbe? To the long list of possible culprits and accomplices we can now add another, controversial entry – fracking. Image: NASA’s Marshall Space Flight Center
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