As the search for cheap, safe and non-carbon emitting sources of energy continues, a band of scientists say the answer may be nuclear reactors fueled by thorium. Others caution that thorium reactors pose waste and proliferation risks. Ira Flatow and guests discuss the pros and cons of thorium reactors.
Delta Airlines has decided to do something about high gas prices. The company is buying a refinery. The airline plans to hold down its jet fuel bills and claims the refinery will pay for itself in one year.
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