The Earth is the only known planet in whole universe that supports life. The complex processes related to the evolution of life occurred on Earth only because of some unique environmental conditions that were present such as water, an oxygen-rich atmosphere, and a suitable surface temperature. Mercury and Venus, the two planets that lie between Earth and the sun, do not support life primarily because Mercury has no atmosphere and therefore becomes very hot during the day, while temperatures at night may reach 140 ºC. Whereas, on Venus has a thick atmosphere which traps more heat than it allows to escape, making it too hot (between 150 and 450 ºC) to sustain life. Only the Earth has an atmosphere of the proper depth and chemical composition. About 30% of incoming energy from the sun is reflected back to space while the rest reaches the earth, warming the air, oceans, and land, and maintaining an average surface temperature of about 15 ºC. But from past some time heavy addition of CO2 by anthropogenic processes has caused severe worried to very existence to humanity on planet earth. The other thing which is causing panic like situation is the distrust between developed and developing countries. And now global warming is the most important science issue of the 21st century challenging the very structure of our global society. The problem global warming is not just of scientific concern, but it encompasses economics, Sociology, geopolitics, local politics and Individual choice of life style. Present paper attempts to bring out some issues and challenges related to Climate change mitigation that are especially relevant in the present global scenario by analysing data provided by IPCC and Various other International Agencies working towards mitigating climate change.