Here are key elements of the agreement:
A strong scientific core The goal is to bring down pollution levels so that the rise in global temperatures is limited to no more than 2 degrees Celsius (3.6 degrees Fahrenheit), beyond which the most disruptive consequences of climate change — widespread drought and flooding and the dying-off of species, for instance — will kick in. The delegates also added language urging that the increase be limited even further, to 1.5 degrees if possible.