According to the International Energy Agency, at current emission rates, by 2040 the world will release all the carbon dioxide it can afford to if it wants to keep global warming to manageable levels.
Much of the reaction thus far has come from politicians and advocates, but it is also important to note the reactions of the people who actually measure climate change and predict how it will impact humans in the future. What do they think about the deal?
The European Commission must still propose specific legislation for the European Parliament to pass. But this morning's deal is a sign that the necessary political compromises and understandings are in place.