What do countries decide to do to stop climate change​

While nations wrangle over a new global treaty on climate change, the question on many minds is: What happens next?
Some are focusing on curbing deforestation and boosting renewable energy sources. Several nations are experimenting with cap-and-trade plans: Regulators set mandatory limits on industrial emissions, but companies that exceed those "caps" can buy permits to emit from companies that have allowances to spare. In some cases, it's not clear that countries are doing much to meet their stated climate goals. What is clear is that the pledges currently on the table aren't legally binding, and they fall far short of what would be required to stabilize the planet's atmosphere.