We must largely stop burning fossil fuels within a decade if we are to save the coral reefs and the Arctic. These escalating consequences can still be avoided, but time is running out. At five, the planet is warmer than for 55 million years, while at six degrees a mass extinction of unparalleled proportions sweeps the planet, even raising the threat of the end of all life on Earth. At four, large areas of the globe are too hot for human habitation, erasing entire nations and turning billions into climate refugees. At three, the world begins to run out of food, threatening millions with starvation. At two degrees the Arctic ice cap melts away, and coral reefs disappear from the tropics. At one degree – the world we are already living in – vast wildfires scorch California and Australia, while monster hurricanes devastate coastal cities. Illustrated with extraordinary images and graphics, the climate expert lays out the scale and timeline of threat to the planet.
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