Do-it-yourself science.
When fishermen in Dorset noticed the fish had grown extra barbules they started to investigate if their bait contained growth hormones. Guest scientist the Hon Miriam Rothschild talks about her life's work.
Carol Vorderman looks into ways to test the quality of our water supplies.
With Professor Ian Fells of Newcastle University. Director Hendrick Ball
Producer George Auckland (R)
W BOOK: 'Take Nobody's Word for It Book of Experiments, price f3.95, available from bookshops.
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