Accurate, approachable, and indispensable, this illustrated science encyclopedia is arranged in such categories as "Planet Earth", "Living Things", "Chemistry a

Introduces important scientific principles and provides basic definitions of common terms in standard alphabetical arrangement with references to related entrie

Presents articles on scientific and technological topics arranged in alphabetical order.

History leaps from the page in this completely revised and updated edition of the critically acclaimed Kingfisher History Encyclopedia. From man's earliest hist

"Minutes, months, millennia - how long is a life on earth?"