Climate change is on us. Parts of the planet are burning up. Heatwaves across the northern hemisphere have dried vegetation and withered crops. Forests are ablaze in North America, Europe and Asia – even as far north as the Arctic Circle. The polar ice caps are melting and sea levels are rising. Massive storms and floods have devastated communities. Deserts continue relentlessly to encroach. And the extraordinarily hot spells this summer followed on from the extraordinarily cold spells of last winter. In 2018, extreme weather is the order of the day.