As per recent reports, it has been unveiled that both the countries, the United States and China, have been working in order to bring a decline in carbon emission.

Both the countries are increasing their bilateral cooperation. Moreover, both the countries that are top two carbon emitters in the world, have confessed that climate change is a matter of concern. Efforts are needed to curb the same.

Increased cooperation is expected to bring a change in the policies and international treaties. Both the countries are said to be taking initiatives at their own levels. To cite an example, China has promised to curb pollution.

Last climate summit between the two countries has taken place some four years ago. The deal that took place in Copenhagen included other countries as well like South Africa, India and Brazil.

Now, when both the countries have got active to do something to bring a decline in climate change, experts have suggested that closer cooperation between the countries will help.

The next major summit that will take place with regard to climate change is in 2015. Its implementation will initiate from 2020.

China said, "For developing countries, they will take diversified enhanced mitigation actions in the context of sustainable development, consistent with their national circumstances".