Mexico City is sinking .0000047 inches every minute and one minute of The Simpsons costs $US68,181 to make. There are hundreds more items like this in The 60 Second Encyclopedia, a pocket-sized rag-bag of facts and figures, all based on one short and comprehensible unit of time.
Children can find out how fast their sneeze droplets travel, how many emails are sent or how often humming birds flap their wings. The focus is US, but UK children will find plenty to enjoy and - with the help of a sand-timer - challenge themselves. The 60 Second Encyclopedia is pound;8.99.
www.workman.com
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