The main points of the deal agreed in Paris.

Paris climate agreement 'may signal end of fossil fuel era', according to optimists.

This agreement could very well start a process leading towards truly curbing global heating. I fear we can't afford to lose that time in getting started. The agreement will still raise global temperatures 3 to 4 degrees centigrade. The problem is, it involves "no action, just promises". When a country adopts a long-term emissions target without policies that will realize it, it may never adopt suitable policies. By the time the target is not met, it is too late.