This book discusses the problems and solutions concerning the protection of Earth's water resources.

In every age, science and technology have advanced human civilization. From architecture to engineering, medicine to transportation, humans have invented extraordinary wonders. Transportation technology has seen significant changes over the centuries. Ancient people traveled on foot and on the backs of animals. People invented wheels and sailing ships, which helped them travel farther and carry larger loads. Fast forward to modern cars, subways, and...

Learn about new tools for spies.

Discusses the discovery of DNA fingerprinting, the processes involved, its initial use, and its past and present role in forensic identification, conservation biology, and human genetics.

Photographs and text trace the life cycle of the silkworm from egg, to larva, to cocoon, to moth. Includes information on how silkworms are used to produce silk cloth.