This episode explores how a 4 degree warmer world could increase the risks of crossing "tipping points" and triggering a cascade of large scale events. Professor Schellnhuber explains the projected intensification of impacts in the event of 1.5 – 2 degrees and 4 degrees warmer temperatures or more by 2100 and how this may possibly affect human security and development. Ultimately this episode will help you better understand why a 4 degree warmer world could look much different considering the risks of crossing thresholds of nonlinear tipping elements ‘tipping points’ and triggering abrupt climate change impacts. You will also dig deeper into the risks and implications of large-scale and disruptive changes in the climate system caused by nonlinear responses of 4°C global warming i.e. the Amazon Rain Forest Die-back, rapid changes to ocean ecosystems, and accelerated loss of the West Antarctic and Greenland Ice Sheets.