HIGHLIGHT: Louis Theroux’s Altered States: Choosing death The presenter visits California, where the terminally ill have the right to end their own lives. He considers the moral and legal issues (2/3). Sunday, 9pm BBC2

TELEVISION: Friday 8pm (C5) 100 Years of the RAF Martyn Lewis celebrates the airborne forces.

Sunday 1.15pm (BBC1) Songs of Praise Five amateur choirs compete in the Gospel Choir of the Year (1/2).

Monday 11am (BBC1) A Matter of Life and Debt The stories of people helped by ethical loans offered by credit unions and responsible lenders.

RADIO: Friday 1.30pm (World Service) Heart and Soul John McCarthy meets a gospel singer who was imprisoned for her faith in Eritrea.

Sunday 8.10am (R4) Sunday Worship A service from St John’s, Keswick, in the Lake District, drawing on the works of William Wordsworth.

3pm (R3) Choral Evensong A repeat of last week’s service from Croydon Minster.

Monday 4.30pm (R4) Beyond Belief Mark Dowd and guests discuss blood and its part in sacred traditions (3/9).

Tuesday 4pm (R4) Law in Action Peacemaking is a traditional Native American form of justice. Could it help to cut crime in urban areas? (4/4)

Wednesday 3.30pm (R3) Choral Evensong Live from Manchester Cathedral, with the BBC Philharmonic.

Thursday 9am (R4) In Our Time Melvyn Bragg and guests explore the philosophy of hope.