(Airs Sunday, August 1) Brave the extreme conditions of Earth's southernmost continent for a close-up look at the varied penguins of the Antarctic.

Beneath Antarctica's frozen seas lies one of Earth's most stable and vibrant ecosystems -- and one of its most enchanting realms. Visit a fantastic world hidden "Under Antarctic Ice."

Both humans and animals seem to be hard-wired to find youngsters adorable. Baby Tales explores the reasons why the young play on our heart strings.

Travel to "The World of Penguins” to discover the great variety of these aquatic birds.