Jen Green

How do we know that the Sun is at the center of our solar system? This scientific theory is know as heliocentrism. This fascinating book looks at the historical controversies that surround the theory of heliocentrism and tells the stories of the scientists who worked on the theory. It also examines how the theory of heliocentrism was arrived at, how it was tested, and what impact the theory has had on our understanding of science today.

Presents information about the men who undertook Ernest Shackletons expedition to Antarctica and the perils they faced along the way.

Describes the physical characteristics, natural habitat, behavior, diet, and world distribution of dolphins.

Describes the habitat, physical characteristics, life cycle, behavior, and different types of wolves, one of the members of the dog family.

An introduction to the sea mammals including physical characteristics and living areas of dolphins, whales, seals and sea cows.

Describes different kinds of insects and their behavior. Includes fact boxes and suggested activities and projects.

Describes the physical characteristics, natural habitat, behavior, diet, and world distribution of worms.