Translating Uncle Sam

How dependent are we on foreign oil?

Weatherization: Energy efficiency hits home

Glacial profiling: Are glaciers on thin ice?

Genetically modified crops on the rise

BPA: Is plastic poisoning our food?

Overfishing: Are there really plenty of fish in the sea?

How much mercury is in the fish we eat?

Are gray wolves still endangered?

Urban or rural: Which is more energy-efficient?

How does El Niño affect hurricanes?

Where does coal come from?

Are small particulates a big deal?