Big-sky fan Gavin Pretor-Pinney may be encouraging us all to have our heads in the clouds but there is real purpose behind his passion. Known as ‘the cloud guy’, Gavin founded the Cloud Appreciation Society 12 years ago on a whim, and it has now grown to over 43,000 members in 110 countries. Along with the app, his books – The Cloudspotter’s Guide and The Cloud Collector’s Handbook (plus another on wave watching) – have earned him widespread praise, and he is the go-to expert on the topic for journalists. Today alone, he has already spoken to the BBC and Al Jazeera, responding to news about new types of cloud being added to the International Cloud Atlas.

Watch his TED talk here or turn to page 32 of June's The Simple Things for more of our chat with Gavin.