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 (00:45). Plus, we talk about the impact of grouse hunting on our countryside (9:35), and last, what does sobriety teach you (20:50)?

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.