Jo welcomes back Mark Thompson in episode 163. Mark is an astronomy, science & sleep broadcaster and author. He tells Jo how a challenge over two years ago has led to a passion for communicating why sleep is so important for our health.

Mark also talks about his new podcast and theatre show, tells us what we can enjoy looking at in the night sky this winter and why he loves Christmas so much.

Jo also visits the John Moore Museum in Tewkesbury to find out about a nocturnal creature - the UK's largest bat.

Presented, produced & edited by Jo Durrant.

Music licensed from Purple Planet.