Describes how cells form the building blocks of life, and discusses such topics as the Linnaean system of classification, Darwin's theory of natural selection, genetic mutation, and extinction.
Introduces DNA and discusses such topics as how it is put together, how cells read DNA, and the science and technology that is being developed based on cells and DNA, including gene therapy and clonin
Offers an introduction to the chemical and physical changes that can occur in materials, discussing oxidation, catalysts, acids, elasticity, pressure, and radioactivity.
Offers an introduction to the three main states of matter--solid, liquid, and gas--and illustrates how materials are used in these states and how states change.
"Our bodies are always active - from before we are born until the day we die. Even when we're asleep our hearts continue to beat, we keep on breathing, and the cells that make up our bodies are consta
Examines the Earth's surface, including how it changes and why it shifts, and describes the formation of mountains, volcanic eruptions, earthquakes, and the movement of continents.
"'Exploring Space' looks at the development of space science and knowledge from ancient times through the present and into the future. You will learn about everything from the first telescopes to the
Describes how humans have attempted to explore beyond the Earth; traces the development of telescopes, rocketry, and space flight; and profiles notable astronomers, inventors, and astronauts.
‘Exploring Space’ looks at the development of space science and knowledge from ancient times through the present and into the future. You will learn about everything from the first telescopes to the n
Describes the function of the body's brain and nervous system, and includes information about the spinal cord, sleeping and dreaming, brain damage, and nerve cells.
