What's under the ground?; What's under the sea?

The themes are hardy perennials but these two examples have produced some particularly choice blooms. Each book is a loosely classified collection of depth-related facts and phenomena of the 'strange and wonderful' sort, waiting to be grabbed and popped into middle school project files. Underground we find giant radishes, birds' nest soup, Cappadocian caves, gemstones and the Terracotta Army. Submarine discoveries include seahorses, walruses, coral reefs, fishing for food, drilling for oil, Channel Tunnel and the Mary Rose - and submarines, of course.

Each collection is tastily-arranged for instant consumption, making these the sort of book that will pass quickly through many pairs of hands, each reader discovering a prize or two before the inevitable 'Can I be after you?'