6.35 Maths Modelling: Knots 7.00 Modern Art: Cubism and Modernism 7.25 Modelling
Planetary Motion 7.50 Scenes from Dr Faustus by Marlowe 8.15 Technology: Novel Proteins 8.40 Given Enough Rope 9.05 Biology: the Restless Pump 9.30 Crime and Punishment 9.55 Equilibrium
Rules OK? 10.20 The Question of Sovereignty 11. 10 Open Forum - as part of the "One World" season, research into sources of renewable energy 11.35 Global Firms. Shrinking Worlds

Laurie Mayer presents the political review for the region. With reports from Jonathan Beale and Tim Donovan. 0 REGIONAL PROGRAMME

Introduced by Steve Rider. Provisional Timetable
12.35 Motor racing
12.45 Grand prix
2.40 Gymnastics
3.25 Rugby league
5.10 Gymnastics
5.35 Rugby union
Motor Racing
Live coverage of the San Marino Grand Prix from Imola, in Italy. Britain's Nigel Mansell leads the way in the 1992 drivers' championship with his Williams team on top over McLaren so far. Plus round 5 of the British
Formula 3 championship from Thruxton.
Commentary by Murray Walker and James Hunt.
(Grand Prix highlights at 9.45pm)
Rugby League
Live coverage of the Stones
Bitter Premiership final from Old Trafford. Since the premiership final was established at Old Trafford in 1987, crowds of around 40,000 have celebrated rugby league's last big day of the season.
Plus a report on the sport's Man of Steel awards evening, when the season's top players and coaches were honoured.
Commentary by Ray French and Alex Murphy.
Gymnastics
European Championships from Budapest. Commentary by Barry Davies and Mitch Fenner.
Rugby Union
Highlights of the Schweppes Cup final, Welsh rugby's premier knockout competition. Producer Martin Hopkins ; Editor Dave Gordon

With next month's Earth Summit getting closer, the intergalactic megastar wonders if he is already too late on the scene. Series producer John Carlaw
A Hawkshead/IBT production for BBCtv ● PLEDGE COUPON: page 18

Seven reports by young environmentalists. Tonight, Andrzej Dlugosz from Poland campaigns against industrial pollution in his country. Producer David Jay
A Hawkshead/TVE production for BBCtv

As British banks count the cost of their exposure to the commercial property market, Peter Wilson-Smith reports on the lessons for the industry of the 80s property boom. Producer Martin Small
Editor David Nissan

The Commissions and Collaborations season continues with Outing Art, taking a look at what happens when art is taken out of the gallery and put on the streets. To find out, the BBC commissioned 20 British artists to make original works to be shown on advertising billboards throughout the UK for the month of May.
The artists range from the well-known - Howard Hodgkin , Richard Hamilton and Helen Chadwick - to the newly infamous Damien Hirst. How they responded to the challenge, and what the public thinks of the resulting images, is investigated by art critic Andrew Graham-Dixon .
Executive producer
Keith Alexander says, "We're very excited at the amazing response we've had.... and we particularly welcome the collaboration of Radio Times as co-sponsor of the project. The magazine has a fine record in commissioning art work, with past covers from such eminent artists as Paul Nash ,
Rex Whistler , Ralph Steadman and Ronald Searle. "
Producer Sheree Folkson
Project also sponsored by Mills and Allen ● INFORMATION: send large sae to [address removed].
COVER STORY: page 26
●EDITOR'S LETTER: page 107

England v Brazil
Highlights of today's international friendly match from Wembley. Introduced by Desmond Lynam , with Jimmy Hill and Terry Venables. Commentary by John Motson and Trevor Brooking. Producer Vivien Kent Editor Brian Barwick ●SPORT: page 16

Highlights of the San Marino
Grand Prix from Imola in Italy. Commentary by Murray Walker and James Hunt. Producer Mark Wilkin
Executive producer Jim Reside

Western, directed by and starring
Clint Eastwood
When his family are murdered and farm destroyed by Union raiders, Josey Wales vows vengeance and joins a band of Confederate guerrillas. With
Sondra Locke , and Chief Dan George. ● TELETEXT SUBTITLES: page 888 ● BARRY NORMAN : pages 44-45

A new series of the hit music show.
e STEREO