Really good book that says that the cost for saving the environment is only 0,5 % of the world GDP. The primary solution is replacing fossile and nuclear energy with solar energy. We need to replace fossile vehicles and roads with electrical ones. We already have all the technology we need. We need to build climatefriendly just as ETC Construction in Sweden does. We need to have an ecofriendly agricultural system. We need to not cut all of the forest at a certain place all at once but some here and where only and resow forest at the same time. The green technology is already here.