The new materials that can self-mend, from concrete cracks to car paint scratches
BBC World Service
MEPs decide whether to ban deep sea trawler fishing from the North Atlantic.
BBC Radio 4
Chris Packham presents the gadwall.
What is the effect of increasing numbers of tourists visiting wildlife hotspots?
2/5 The humidity and parasites take their toll, as the team search for jungle elephants. (R)
2/5 Michaela and Steve help three organgutan babies learn how to behave like wild animals. (R)
Adam Walton learns about the latest genetic research and treatment options for dementia.
BBC Radio Wales
4/6 A' toirt sealladh air buaidh na mara air iasgairean. (R)
2/3 Kate Humble gets closer to the Sun than she has ever been before. (R)
How virtual patients help medical students with their bedside manners
4/6 Brian and Robin explore mathematics, infinity and the role of numbers in everyday life.
Tom Holland explores how our ancestors sought to explain the remains of dinosaurs. (R)