This week, a report on an innovative new approach to producing energy from the tides. It is the water-based equivalent of a windmill, designed efficiently to convert strong tidal currentsto green electricity. Also, Bob Symes is back with another collection of more amazing inventions, including a way to lay carpet, without moving the furniture. With Judith Hann , Kate Bellingham , Howard
Stableford and Carmen Pryce. Producer Saul Nasse ; Editor Dana Purvis