Costing The Earth

Radio 4, 3.30pm

Steve Backshall (right) begins a new series of the eco show in Canada, where he learns how the busy shipping lane between Vancouver Island and the mainland is impacting on the local whale population.

Documentary Swimming Against The Tide (Radio 4, 11.30am) reveals that 95 per cent of black adults in England don’t swim. Now in her mid-40s, Joyce Osei sets out to buck that trend by taking lessons.

Drama: Faith, Hope And Glory (Tuesday-Thursday, Radio 4, 2.15pm) returns for a new run, which begins as the reappearance of her ex-husband forces Hope to face up to her past.