An in-depth look at Earth's waters and mankind's uses of water throughout history which includes ideas about planning better use of this critical resource in the future.
Discusses plate tectonics, the theory that the surface of the earth is always moving, and the connection of this phenomenon to earthquakes and volcanoes.
Describes the atmosphere which makes life on earth possible, explores its effects on weather and climate, and examines what causes air pollution and what can be done about it.
Discusses and explains visual phenomena seen in the sky, primarily interactions of light and atmosphere such as rainbows, mirages, the twinkling of stars, the blue color of the sky, and the Northern Lights.