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The week ahead

Foresight

If you know of events, exhibitions, books, programmes or websites that ought to be included in Foresight, contact Karl Thompson, tel (020) 7505 6682, e-mail karl. thompson@ construct. emap. com Saturday 27 March The World's Most Difficult Puzzle There are many taxing pastimes and hobbies, but when it comes to jigsaws puzzles there can surely be none more perplexing than Convergence, the name given to a 340 piece baffler taken from a painting by Jackson Pollock.

Created in 1963 by Robert and Katy Lewin, it sold 100,000 copies in the first year and had thousands sharing tips on how to piece it together. Those of you familiar with the multicoloured, abstract splashes and drips of Pollack's paintings will have some idea of the challenges. For those who don't, imagine the pavement outside a pizzeria in the early hours, following a stag party's heavy eating and drinking session.

BBC Radio 4, 3.30pm Sunday Scrapheap Challenge USA An American version of the UK series. Shouldn't that be Junkyard Challenge?

Channel 4. 3.05pm Titanic: Anatomy of a Disaster A Discovery Channel premiere which claims to shed new light on the tragedy.

Discovery Channel, 9pm Monday Salvage Squad The challenge this week is to restore a 1931 Sentinel steam lorry.

Channel 4, 8pm Thursday Dig with Dibnah Fred Dibnah attempts to create a 30m deep coal mine, complete with pit head gear and winding engine in his garden. Our Fred must have some very understanding neighbours.

BBC2, 8pm Material World Scientists believe the water that covers 70% of our planet will become increasingly acidic over the next 100 years, posing a threat to marine life while bringing about drastic changes in climate.

Quentin Cooper asks the experts how this is coming about and what can be done to prevent it.

BBC Radio 4, 4.30pm Costing the Earth Hey, guess what? More water and the environment, readers, this time in the land of Oz and the high levels of salt in Adelaide's groundwater. It's having a devastating effect on infrastructure, corroding rails, pipelines, concrete and bitumen.

By 2050 it is thought the water will not be fit to drink and rising salt levels could devour nearly 14M hectares of farmland. Strewth mate, there'll be some real bother down the billabong if that one goes down. Biologists and crop scientists weigh up the implications.

BBC Radio 4, 9pm Friday Time Team: Blaenavon The team turn their trowelling talents towards the world's first railway viaduct in Blaenavon, South Wales.

Discovery Channel, 1am Meccano Auction Thanks to the beneficence of Andy Walker of the ACE, Foresight has been alerted to this rather unique auction of items rescued from the Meccano factory in Liverpool, just before it closed in 1979. If there's cash burning a hole in your pocket, then this collection of Meccano sets, Dinky toys and Hornby trains should effortlessly relive you of those unwanted funds. There are two sales - the first is at the HQ of auctioneer Vectis in Thornaby, Stockon-OnTees, from 6-8 April. The second auction is in Rugby on 17 April.

The sale is expected the raise over £40,000. For more information contact Vectis Auctioneers.

Tel: (01642) 750616 www. vectis.co.uk

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