HIGHLIGHT: Changing Climate As preparations are made for the UN climate summit in Paris, Roger Harrabin looks at the science behind climate change.

8pm Radio 4, Monday

TELEVISION: Friday 7pm (C5) Secrets of St Paul’s Cathedral A team of experts examine the engineering involved in Sir Christopher Wren’s masterpiece (Repeat).

7.30pm (C4) Unreported World: Mexico’s baby business A look at the global child-surrogacy industry.

8.30pm (BBC2) An Island Parish: Falklands The Revd Richard Hines contemplates retirement (1/6).

Sunday 1.45pm (BBC1) Songs of Praise Connie Fisher looks at ways in which cooking and singing are building bridges between religions.

RADIO: Friday 11am (R4 FM) Lives in a Landscape Alan Dein meets a couple in their nineties who have opened a school for children who are bullied (2/4).

Sunday 8.10am (R4) Sunday Worship A service recorded for Prisons Sunday from HM Prison Long Lartin, Worcestershire.

3pm (R3) Choral Evensong A repeat of last Wednesday’s service from Winchester Cathedral.

Monday 10pm (R3) Free Thinking Festival Rana Mitter and guests discuss human interactions with the environment (5/12).

Tuesday 3.30pm (Radio 4 FM) Costing the Earth David Attenborough and other experts preview the Paris climate summit.

3.30pm (R3) Choral Evensong live from New College, Oxford.

Wednesday 8.45pm (R4) Four Thought Rachel Roberts argues that education needs a revolution.