6.35 Maths: Coping with Irrationality
7.00 Cyanide, Crystals and Co-ordination
7.25 Gibbon: the Ruins of Rome
7.50 A Conflict Brought to
Light
8.15 Carmel: a Jewish
Public School
8.40 Roman Interior
Decoration
9.05 Structural and Spanning Materials
9.30 Brian: the Life of an Ordinary Man
9.55 The Albert Memorial
10.20 Biology: Power Plants of the Cell
10.45 Maths: Iteration and Convergence
11.10 Living Choices: Good
Moves
11.35 Electrons and Atoms

World Professional Snooker
Championship from the Crucible Theatre, Sheffield. Day 10: Round 2.
David Vine brings news of the morning's play as Round 2 continues, and both ticket holders and viewers alike should be pondering the chances of Stephen Hendry 's bid for the title being successful.

On this very sporting Sunday, John Craven introduces a broadcast version of an award-winning film, Breaking Through, which won the best documentary category at last year's Bristol Film and TV Festival. It is the story of Harriet Harrison , one of Britain's most promising young three-day event horseriders. Harriet is the granddaughter of the actor Rex Harrison and the 1992 Olympics is her target.
Plus the weather for the countryside at 12.55pm with Bernard Davey.
Producer Charles Heckstall-Smith Editor Michael Fitzgerald BBC Pebble Mill

Starting an OU course can be an anxious time.
Students describe how they coped during their first year. Producer Paul Manners

Introduced by Steve Rider. Provisional Timetable
1.30 Snooker; 2.00 Ice Hockey
2.40 Motor Racing
3.00 Ice Hockey
3.40 Rugby Union
4.30 Ice Hockey; 5.10 Snooker
Rugby Union
From Twickenham.
Four Home Unions XV v Rest of Europe XV
Fund-raising match for the Romanian Appeal. Second half live. Commentators:
Nigel Starmer-Smith and Eddie Butler.
Snooker
From the Crucible, Sheffield. Embassy World Professional Snooker Championship.
Commentators: Ted Lowe
Jack Karnehm and Clive Everton.
Ice Hockey
From Wembley Arena.
Heineken Championship Final. Commentators:
Barry Davies , Paul Ferguson and Red Imrie.
Motor Racing From Thruxton.
Lucas British Formula 3
Championship: Round 3.
Commentator: Murray Walker. Television presentation: Rugby union Alan Griffiths
Snooker Keith Mackenzie Ice hockey Huw Jones Motor racing BHP
Producer Martin Hopkins Editor John Philips

From Twickenham, where this afternoon the Four
Home Unions XV played the Rest of Europe XV for the Skilball Trophy. In
Wales, Bath visit Llanelli.
Introduced by Chris Rea. Commentators: Nigel Starmer-Smith , Eddie Butler and Lyn Davies. Executive producer Johnnie Watherston

A string of financial scandals has called into question the effectiveness of the City's regulatory structure. John Penycate reports on the problems this creates. Peter Jay interviews David Walker , the chairman of the Securities and Investments Board.
Deputy editor Alan Griffiths Editor David Nissan

Ice Pack
In the remote wilderness of arctic Canada, a pack of white wolves has scented prey: musk ox.
As the frozen landscape emerges from five months of winter darkness, photographer
Jim Brandenburg and biologist David Mech travel north to spend an arctic summer in the company of wolves. In stark contrast to their previous experiences, they were soon accepted by the pack, and in the coming months they witnessed aspects of wolf society beyond their expectations. Narrated by Barry Paine. Producer Robin Hellier BBC Bristol (R)

4: Sixpence Worth of Heaven
The history of television commercials looks at the fantasies and delectations offered to women. Producer Kathy Myers
Series producer Nicholas Barker
0 CEEFAX SUBTITLES

World Professional
Snooker Championship. Day 10: Round 2.
By the end of the evening the last two players to survive to the quarter-final stages of the 1990 championship will be decided. Seeding should dictate that Jimmy White and Stephen Hendry will make it to the final eight - once they have got through the third and final session of their second-round ties.
There are nine frames tonight with the best over 25 frames going through.
David Vine has tales of both matches as they unfold in the Crucible Theatre, Sheffield.

Starring Sam Waterston, Haing S Ngor

One of the most powerful and admired British films of recent years, this recreation of an extraordinary true story was winner of three Academy Awards.
Cambodia 1973: American journalist Sydney Schanberg and his guide Dith Pran are operating out of the war-torn ruins of Phnom Penh. When the Khmer Rouge armies enter the city they are welcomed with open arms. But foreign journalists become the targets of hatred and soon Schanberg and his colleagues are rounded up and look certain to be executed.

Barry Norman: page 15
(Ceefax subtitles)

Embassy World Professional Snooker Championship. Day 10: Round 2.
Of the 159 players who've been taking part in the 1990 tournament so far, including those who tried to qualify and the top 16 seeds, only eight will have dreams left tonight of the major prize of 9120,000 and the title of World Champion.
David Vine is in the Crucible
Theatre, Sheffield, through midnight and in to tomorrow, summing up the success and sorrow so far, as the tournament begins to build up to its annual showdown.

Suzanne Vega is back and talking to Rapido. Also featured: veteran rocker
Robert Plant , eccentric
Americans Timbuk 3 and from New Mexico, the Oyate Indians. Presented by Antoine de Caunes.