Mysteries Through the Ages

Mysteries Through the Ages deals with more arcane knowledge--or rather, with unanswered questions. The authors--Anne Millard, Frances Dipper, David Unwin and Nigel Hawkes--delve into mysteries of evolution, lost civilizations, the pyramids, ocean depths and the universe. At least half the pages are black, which makes the host of illustrations and the text stand out dramatically. (Millbrook/Copper Beech, $16.95 192p ages 9-11 ISBN 0-7613-0518-1; Sept.)