Week of 10/17/10 - Emagazine.com
Dear EarthTalk: What, if anything, fills the empty space underground created by the extraction of billions of gallons of oil? Could oil drilling be one of the causes of increasing amounts of land settling and sinkholes in oil rich areas? Can it cause earthquakes?Dear EarthTalk: I'm considering going for a teeth whitening, but is this safe to do?
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