Let’s begin with science. The planet has warmed 1.1 degrees Celsius since the start of the Industrial Revolution. The most recognized experts we should try to keep temperature rise well below two degrees Celsius. Somewhere between 1.5 and 2 degrees Celsius, we might experience some dramatic tipping points that could really alter life on this planet as we know it. So we really don’t have much time, and this could be our last chance to save the planet.