This week the UN released a comprehensive scientific report offering humanity a ‘final warning’ to avoid climate catastrophe – but it barely got any coverage. So what is it about bleak climate assessments that can cause people to switch off? On this week's episode of Sky News' ClimateCast, Tom Heap asks psychologist Dr Sander van der Linden why our brains struggle to process news that scares people and speaks to comedian Tom Walker, AKA Jonathan Pie, about using humour to get the point across. Plus, social media content creator Venetia La Manna explains what made her change from a fast-fashion addict to a fair fashion campaigner. Podcast producer: Rosie Gillott Editor: Paul Stanworth