3/6 Brian Cox and Robin Ince discuss the future of human space travel.
BBC Radio 4
Plastic bottles, charitable giving and a robot that asks you for money
BBC World Service
How certain can we be about a diagnosis of shaken baby syndrome? Linda Pressly reports
2/2 Soldiers who have killed in war at close quarters talk about how it affects them today.
1/2 War stories of both living and dead in Vietnam, a country crowded with wandering souls
3/3 Michael Robinson investigates the skyrocketing prices of the world's basic goods
5/5 Memories of playwright Terence Rattigan, from actor Sir Donald Sinden.
Emily Buchanan explores the dilemmas of sponsoring children in developing countries.
7/30 Saving Species explores the mysteries of bird migration.
4/5 Reflections on playwright Terence Rattigan, from theatre director Thea Sharrock.