The top 5 contributors are US, Russia, UK, China and India. Developed countries have already been emitting most persentage of emission. Developing countries have also been emitting in order to maintain their growth.
There several meets and protocols worldwide to reduce the effect of Green House gases(GHGs). These are Kyoto protocol, Copenhagen meet and so on. They have agreed to reduce these GHGs by 2020. Wheather they are developed or developing countries, the individuals should aware of these emissions and try to reduce by taking responsibilities at their own risk in order to save our earth.
As the technologies have been revolutioning the world, scientist and experts should found new ways of using solar, wind and other renewable energies at reduced cost, so that the conventional vechicles and industrial components would be completely avoided.
Politcians should also cooperate for the technological breakthrough in order to reduce the carbon emissions for saving our earth.