Did you know that polar bears' bodies are perfect for living in the freezing temperatures of the Arctic? How does the warming Arctic affect polar bears?
Presents such information about Mars as the fact that it has the largest volcano in the solar system and that iron in its dirt gives the planet its red color.
Provides the history of the Unites States Capitol building, including its importance as a symbol of the United States, the construction, and rebuilding after the War of 1812.
Looks at the history of the nickname for the United States government, discussing where the term came from, and how the image of Uncle Sam changed over the years.
