Warnings of looming environmental catastrophe rain down on us with increasing frequency, and only the most ardent climate change sceptics deny we live at a crucial point for the Earth's future. Join sustainability expert Mike Berners-Lee in a live conversation with WWF’s Tanya Steele at the Edinburgh International Book Festival 2019, as he cuts through the noise with practical advice on how we can avoid calamity, drawn from his book There is No Planet B, a ‘Handbook for the Make or Break Years’.