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Examines why the Earth has seasons and why the seasons are different in different parts of the world.

Bill takes a look at Jupiter's features, Earth's elliptical orbit and the distances between planets, and demonstrates how to make Mars soil.

Bill reveals what kinds of nutrients are in each bit of grub and what foods are best for healthy bodies.

Looks at the history and culture of the ancient Maya and reviews their success in engineering, astronomy, art, and hieroglyphs.

Learn what changes different animals go through, changing their bodies and color, the way they get food, defend themselves and more, so that they will survive.

An introduction to the ecology of the rain forest and to the insects, birds, and other creatures that live there.

The inhabitants of Mammoth Island explore how magnets work and the many ways in which they can be used.

Track the transformation of these wild pack animals into today's popular and loyal pets.

Examines the wonders of the insect world through macrophotography and startling 3-D graphics that reveal the true importance.

Newland Archer is newly married to May Welland, but is in love with Ellen Olenska, an old friend who has returned to town.

Provides an overview of American history from its settlement to World War II.

A lesson in the helpful and harmful strains of bacteria that are everywhere in our universe.

Working on a research project for school, Greg is zapped into the Internet and plopped down at the historic site of Jamestown, where colonial interpreters teach him about the settlers' early struggles to survive, the start of the tobacco trade, and the way of life of the Powhatan Native Americans.

Explores the history of Santa Fe, New Mexico, founded in 1610 as the northernmost outpost of the vast Spanish empire in the New World.

A series of lively songs and sketches that make learning about money fun and easy.