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Describes what we have learned about our solar system from telescopes and spacecraft, focusing on the characteristics of the planets and their moons.

Astronaut Sally Ride examines how the earth is studied from space, its critical relationship with the other planets in the solar system, and some of the earth's features, including climate, orbits, atmosphere, and light.

Discusses the composition and states of water, its importance for human beings, how humans get water, how humans are polluting the water supply, the effects of this pollution, and strategies that would help with this problem.

Describes moon and shuttle missions in history, the training of astronauts, life aboard the shuttle, and possible future missions.

Describes the twelve-year Voyager missions to Jupiter, Saturn, Uranus, and Neptune, including details of the spacecraft and their discoveries about the planets and their moons.

Describes in text and photographs what it is like to be an astronaut on the space shuttle. Includes a glossary of terms.

Some of the first geologists came from ancient Greece and Egypt. Later, scientists in China studied how land was formed and figured out how erosion wears away mountains, rocks, and other landforms. Scottish scientist James Hutton's The Theory of the Earth became the basis for mod...

This fascinating book is part of the Life Sciences Readers for students in Upper Primary School.

Plants and animals that need one another in an environment form an ecosystem. All ecosystems have energy pyramids that show the exchange of energy from one food source to another. Biomes are areas of the Earth that have their own climate and characteristics. Ecosystems all over t...

A brief profile of Hippocrates, an ancient Greek doctor who was instrumental in changing many areas of medical treatment, and includes information on other notable medical scientists including Sir Alexander Fleming and Louis Pasteur.

Ecologists study the connections living things have with one another and their surroundings. John Woodward did some of the first ecology experiments in 1699 and figured out algae bloom. Aldo Leopold s work led to the Endangered Species Act to protect plants and animals from becom...

Discusses the composition of air, its importance for human beings, how humans are polluting the air with fossil fuels and greenhouse gases, the effects of this pollution, and strategies that would help with this problem.