the Amazon rainforest will be destroyed and warmer soil will kill vegetation and release more carbon.
Hurricanes will be stronger and cities in Asia, Australia and the south-east of the US will face destruction. Holland will be torn apart by the North Sea.
Saltwater will creep upstream, poisoning the groundwater and ruining the food supply.
If the world's temperature rises by three to four degrees, millions of people will begin to flee coastal areas, cities will begin to vanish and some will become islands.