Extreme natural disasters sadly became the norm in 2017, and there is little doubt climate change played a role in them. To limit global warming to two degrees, the main goal set in the Paris agreement on climate, experts say that emissions will have to peak and begin to sharply decline in 2020. That means 2018 is vital in the fight against climate change. Keep a look out for these four climate developments in the coming year, success will surely hinge on their outcomes.