Translating Uncle Sam

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

How much mercury is in the fish we eat?

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?

A shadow of a drought

What causes lightning?

What happened to the Everglades?

How to save water

Which household items contain mercury?

Which U.S. cities are most energy-efficient?