Researchers at the Woods Hole Oceanographic Institution say they know where all oil from the Deepwater Horizon spill went - it's 3,000 feet under the sea. Invisible but still there. This happens the same week shrimpers head back into the water. We talk with one of the author's of a new study who says it may not be visible but the oil is still very much in the Gulf, and hasn't disappeared. And think you know how to save energy? We'll talk to one woman who says her research shows most of us are clueless when it comes to saving energy and energy efficiency. Shahzeen Attari discusses what she found, what we REALLY need to do to make America a more efficient society. Plus - as the country looks toward cleaner energy, one source may surprise you. Waste - human waste. Clean Skies Sunday tours a carbon slurry pond - yep, a plant that turns sewage to e-fuel. Clean burning e-fuel. And finally, D.C. official look to a transportation future by taking a page from the city's past. A return to streetcars. We'll show you how the city is tearing up and gearing up streets for trolleys officials say will help commuters and the environment at the same time.moreless
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