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Black hole fever has gripped the nation. Here鈥檚 more鈥擝lack Holes by
Heather Couper and Nigel Henbest (Dorling Kindersley, 拢9.99, ISBN 0 7513
5371 X). This is packed with bite-sized facts about everything from how black
holes form to general relativity, wormholes and quasars. It鈥檚 not clear exactly
who it鈥檚 pitched at, though. The design suggests the young children鈥檚 market,
while the text seems aimed at an older readership.