fossil fuels

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Carl Safina's Sea Change: 'Nature and Human Dignity Require Each Other.'

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Photo of the Day: Breastfeeding on Fossil Fuels

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A Bad Person Trying to Be Better: The Road Less Driven

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Brazil Plans Oil Rigs in 'Underwater Cities'

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Make a Difference: In Five Minutes Flat!

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Power Seas: Harvesting Clean Energy From the Ocean

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HP Looks to Convert Cow Manure Into Green Energy

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Exclusive Interview: New U.N. Climate Chief Christiana Figueres

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Christiana Figueres: U.N.'s New Climate Chief Is Hot to Strike a Deal

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Bike to Work Day 2010: Two-Wheelers for a Better Planet

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