Scientists found a planet that looks an awful lot like Earth.

One U.N. leader says that even an international treaty won't ensure the world avoids dangerous climate change. And we don't even have that!

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Rootworms are developing a resistance to Monsanto's Bt corn, and scientists get to say "I told you so."

The Carbon War Room has all your jet fuel sustainability rankings right here.

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Paris is planning to increase its rooftop green space by nearly 300 percent.