6.45 The Million-Dollar Motorcar

7.10 Floating an Integral

7.35 The Kenyan Small Farmer

8.00 Carbonyl Chemistry

8.25 Maths Methods: Vibration Absorbers

The Playbus stops today at the Patch Stop at Little Salkeld, Cumbria, where Peggy finds out about flour and meets a rabbit.
Today's story is Piggo and the Secret Tunnel, written and told by Pam Ayres. With Vanessa Amberleigh.
(R)

Why does a Jewish boy give up his spare time to learn Hebrew? What did the Buddhist leader of Tibet do when a foreign army marched into his country? With Mark Chatterton , Lynne Kieran and Susan Leong. Director Celia Thomson Producer Judy Merry (R)

Tony Phelan visits the Aids Unit at the Mildmay Mission Hospital in London's East End where the hospital's director of nursing, Ruth Sims, looks at how today's reading challenges attitudes and motivates action.
Reading: I Peter 1, vv 3-9.

Celebrating Bugs's 50th anniversary in show business. (R)

Starring Barry Bostwick

All-action fantasy adventure featuring a dazzling array of futuristic hardware.

Films: pages 18-22

Another chance to see an edition of The Big E, this time with sign language and subtitles.
The Balancing Act. Chris Baines reports on the damage done to the countryside by too many visitors. Sign language interpreter: John Lee.
Producer Ron Bloomfield

Twenty years ago Loch Neagh in Northern Ireland turned green, suffering from the kind of algal overgrowth that is now causing problems in many of England's lakes and reservoirs. As Chris Baines reports, research in Northern Ireland has probably solved the problem there and opened the way to controlling other forms of water pollution. But will the newly privatised water industry have the courage and far-sightedness to invest in a radical and unusual method of keeping our water clean?
Introduced by John Craven.

Plus the weather for the countryside at 12.55pm with Bernard Davey.

With Moira Stuart.
Followed by On the Record
After the international convulsions of the past year, Britain faces tough decisions about its future and how it should respond. As the nations of Europe start to hammer out new treaties, new currencies and new politics, what does Britain want? Will the outcome be to our advantage or will we be left on the sidelines? In his first major interview since becoming Foreign Secretary, Douglas Hurd talks to
Jonathan Dimbleby about his vision of Britain's future and the critical choices ahead. With John Cole. Editor Glenwyn Benson

Another chance to see last week's episodes. The struggle to save the market reaches crisis point and Michelle makes a disturbing discovery. The Vic's new landlord arrives and forces Wicksy to take drastic action.
(Ceefax subtitles)

Starring Curt Jurgens, Orson Welles

A waterfront layabout, Austrian Mark Conrad is forced from Hong Kong on to the ferry to Macao. Then, much to the pompous captain's disgust, Macao also refuses to let Conrad ashore - leaving him a permanent passenger on board the vessel. However, when a series of disasters strikes the boat, including a typhoon, Conrad shows his true worth.

Films: pages 18-22

Four very different events begin this year's special air show season: the heavy metal military power at RAF Mildenhall; family fun at the Southend Air Show; the veterans of the skies at Old Warden's
Shuttleworth Collection; and the Schneider Trophy air race.
Presented by Noel Edmonds with John Hutchinson , Sybil Ruscoe and Rob Curling.
Television presentation Peter Hylton Cleaver

A magazine that looks at a man's world from a woman's perspective. Why are women like Sue forced to borrow money at interest rates of 1,000 per cent from illegal moneylenders? And who said this? 'Cats are like beautiful women - utterly demanding, utterly selfish, utterly idle and utterly useless.' With Lucy Pilkington and Susan Rae.
Director Joanne Reay Producer Jane Lush
0 CEEFAX SUBTITLES

Claire Rayner appeals on behalf of Parents for Children, a voluntary adoption agency which recruits adoptive families for children whose experience of abuse or deprivation has been extreme. With Cliff Michelmore and Lynette Lithgow. Producer Jill Dawson
0 DONATIONS: please help Parents for
Children in their difficult and vital task. Send your donations to [address removed].

With Moira Stuart.
Weather Bernard Davey

In tonight's programme Bill Oddie visits the Glastonbury Festival which for many people has a particular spiritual significance, especially at the time of the midsummer solstice. With music from Hothouse Flowers and Ladysmith Black Mambazo. Producer Christopher Mann
Series editor Roger Hutchings
* CEEFAX SUBTITLES

A series based on the popular books by Yorkshire vet James Herriot. Starring Christopher Timothy Robert Hardy
The Nelson Touch. James castrates
Lord Hulton's pigs and wins the pools. Siegfried wins the day with Mr Hopps 's digestive problem.
Episode written by Roger Davenport Director Bob Blagden
Producer Bill Sellars (R) 0 CEEFAX SUBTITLES

Starring
Warren Beatty Julie Christie
Joe Pendleton 's promising football career is abruptly ended in a fatal traffic accident. But it seems Joe was called from this world before his time and is soon to return - in someone else's body.
Screenplay by Elaine May and Warren Beatty. based on the play by Harry Segall
Directors Warren Beatty and Buck Henry
('Warren Beatty - a Film 90 Special' on Thursday at 10.00pm)
0 COVER STORY: page 4
0 FILMS: pages 18-22
0 CEEFAX SUBTITLES

With Martyn Lewis.
Weather Bernard Davey

And Donor Makes Three. Do you consider that you have a right to know who your father is? Thousands of children, produced as a result of artificial insemination by donor, are denied that right. Recent legislation has decreed that identifying information about sperm donors should be held by clinics, but not made available. Many families with donor children also wish that information be kept secret - but whose rights are primary?
Joan Bakewell meets parents, children, donors and clinicians to unravel the implications of parenthood when donor makes three. Director Claire Hobday
Series producer Olga Edridge

A new comedy drama series from the USA starring Blair Brown Unbreakable Bottles. Intelligent, attractive and independent,
Molly Dodd has the world at her feet - so why must it always trip her up? When she discovers that the elevator man hates her poems, her latest date has a wife and a lover, and her ex-husband is about to remarry, she hits the bottle.
9 FEATURE: page 8

5: You and Your Food and Drink
Alan Watson and Dick Taverne ask how 1992 will affect what we eat and drink.
Producer Laurence Vulliamy
Series editor Christopher Capron A Capron production for BBCtv
0 BOOKLET: send a 28p A4 sae to [address removed], (available mid-August).

A 91-part epic drama in Hindi with English subtitles.