Train your brain: can your mind stay young?

Can you train your brain to stay young beyond its natural age? Recent research suggests so - and we take a look at the science and what this means for society at large (00:40). Plus, we talk about the impact of grouse hunting on our countryside (9:30), and last, what does sobriety teach you (20:45)? With Damian Green MP, Linda Blair, Ben MacDonald, Tim Bonner, Damian Thompson and Tanya Gold. Presented by Lara Prendergast. Produced by Cindy Yu and Gabriel Radonich.