An introduction to the life cycle of the butterfly.

Examines the processes that make our changing world so diverse and exciting, from the tiniest seed to the tallest mountain.

The PBS television host and his team of young scientists turn into seeds, tadpoles, and caterpillars to learn about the life cycles of different creatures, and discover what is necessary for something to be alive. Includes experiment and glossary.

See how young forest animals grow and change in the first weeks and months of their lives with this educational children's book series for little nature lovers.

In 1849, a crew building a railroad through Charlotte, Vermont, dug up strange and beautiful bones in a farmer's field. A local naturalist asked Louis Agassiz to help identify them, and the famous scientist concluded that the bones belonged to a beluga whale. But how could a whale's skeleton have been buried so far from the ocean? The answer-that Lake Champlain had once been an arm of the sea-encouraged radical new thinking about geological time scales...

The silly true story of how Darwin discovered that the earthworm is one of the most important species on the planet. Without their life-sustaining poop, there would be no plants or animals on Earth. A scholarly worm gives historical facts and context on every page.