Translating Uncle Sam

Are grizzly bears becoming unbearable?

U.S. pipelines at a crossroads

What are rare earth metals?

Up and atom: The comeback of nuclear power

The rising threat of radon

What's killing all the coral?

Is organic food worth the cost?

Endangered species: Where are they now?

What causes hurricanes?

Will oil and hurricanes raise gas prices?

How dependent are we on foreign oil?

Weatherization: Energy efficiency hits home

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