Jan.-Feb. 2010
Active Earth
Our plant is in constant motion. Travel below Earth's surface to explore the action.
Winning Edge
Competing in the Olympics takes skill, strength, and science. See how one athlete uses all three.
Family Ties
Do you know much about your great-grandparents? Learn how to unlock your family history.
Parrot Paradise
Travel with a scientist to Peru and discover what people are doing to protect these birds.