Gavin Pretor-Pinney is the founder of an organisation called the Cloud Appreciation Society, which boasts thousands of members online. His passion has taken him all over the world, including to remote corners of Australia. Gavin celebrates the importance of clouds and ponders how patterns might change as our climate shifts.

• Guest: Gavin Pretor-Pinney, Cloud Appreciation Society
• Producer: Catherine Zengerer, Rebecca Metcalf
• Guest: Gavin Pretor-Pinney, Cloud Appreciation Society
• Producer: Catherine Zengerer, Rebecca Metcalf