It seems like an impossible task: secure a safe future for life on Earth, at a scale and speed that the world has never seen, in the face of vast and powerful forces – not just oil tycoons and governments, but the changing climate system itself. The odds are against us, and we are running out of time. But it doesn’t have to be this way. Around the world, geophysicists and mathematicians, oceanographers and meteorologists, engineers, economists, psychologists and philosophers have been using their expertise to develop a deep understanding of the crises we face. Greta Thunberg has created ‘The Climate Book’ in partnership with over one hundred of these experts in order to equip us all with this knowledge.