?Today, humanity faces a fundamentally different challenge ? that of managing a planet and a global human civilization in ways that will sustain both indefinite

An encyclopedia designed especially to meet the needs of elementary, junior high, and senior high school students.

First Published in 1998. Routledge is an imprint of Taylor & Francis, an informa company.

By intelligence officials for intelligent people

Do you like stories with time travel, alien abductions, strange technology, space travel, space battles, super heroes and super villain's and more aliens? Then