Translating Uncle Sam

White-nose syndrome haunts bats

How floods happen, and how to be safe

What is the Great Pacific Ocean Garbage Patch?

What are the different types of lightning?

Are wildfires getting worse?

Which U.S. volcanoes are likely to erupt next?

Earthquakes: Finding fault with nature

Road salt's Catch-22: It works, but at a price

Flaking out: How snow forms

Interactive: Explore the surface of Mars

Are grizzly bears becoming unbearable?

U.S. pipelines at a crossroads