'Call of the Wild' is the first podcast from WWF, and is aimed squarely at young audiences of below 35. This target influences everything, from host selection to scripting, guest recruitment and music choice. 

There's a complex format involving famous names, WWF experts and people on the front line of climate change. All with the objective of giving our young listeners some clear actions they can take to help improve the environment for everyone and combat climate change. 

Here, we chat to Greg Armfield - Senior producer at WWF, and Izzie Clarke - Senior Producer at Fresh Air Production to hear how they created this wonderful podcast, and what they learnt along the way.