Bacteria locked under Antarctic lake ice may shed light on life's limits, and the possibility of life on other worlds.
A new documentary explores how climate change is affecting the world's glaciers.
Food waste is a growing problem in the U.S., so what can we do to fix it?
A look beneath Earth's surface at what may be causing the planet's poles to wander back and forth.
With Sandy leaving destruction in her wake, a look at how cities might plan for future storms.