Copenhagen Accord

Paris climate agreement becomes international law

The Paris Agreement to combat climate change became international law on Nov. 4, putting pressure on countries to take action to slash greenhouse gas emissions and limit global warming. 

This action comes after record-fast ratification by nations reassembling next week for a fresh round of U.N. climate talks. 

Climate change: The impossible deal

For "shall", substitute "may". For example, change "countries signing this climate change treaty SHALL state how much they are going to cut their greenhouse emissions" to "countries signing this climate change treaty MAY state how much they are going to cut their emissions if they feel like it, but if they don't, hey, no problem."