In this blog I want to discuss the science of climate change.
On one hand, the "Anthropocene" written by Paul J. Crutzen and Eugene F.Stoeermer who are the Dutch Nobel Laureate chemist states that mankind plays a major role in geology and ecology.  They wrote this article for the newletter of the International Geosphere-Biosphere Programme in which they suggested that the Holocene--the geological epoch that marked the 10,000 years of human civilization-- had come to an end. The increasing number of mankind's population and mankind's brainpower and technological talents of pre-capita exploitation of Earth's resources is affecting the world greatly.  The depletion of a large amount of fossil fuels  makes "greenhouse" gas increase apparently in the atmosphere. The main "greenhouse" gas is carbon dioxide. According to a study by Berger and Loutre, the artificial emissions of carbon dioxide will become  the main factor of climate change over the next 50,000 years (p71). All in all, mankind's activity have great influence on climate change.
On the other hand, the Scientific Consensus on Climate Change written by Namoi Oreskes who has taught at Harvard, Damouth, and NYU states that the scientific consensus on climate change is unclear. He wrote this article because he felt interested in investigating the analysis which appeared in Science in December 2004. The report of the Intergovernmental Panel on Climate Change(IPCC）has express the scientific consensus clearly. In it's opinion, climate change is being affected by mankind's activities. Though most of the reports and statements support this opinion, some people still feel confuse or disagree with scientific consensus because there are many specific factors on climate change that we haven't known well yet. Scientists are supposed to do further research to make it  clear.
As far as I am concerned,  human being's activity is the major factor that affect climate change. According to the National Academy of Sciences report, Climate Change Science, greenhouse gases are accumulateing in earth's atmosphere as a result of human activities, causing surface air temperatures and subsurface ocean temperatures to rise (p76). In our life, people  burn oil or coal frequently. That will release a large amount of carbon dioxide into the atmosphere. It leads to the greenhouse gas carbon dioxide accumulate in the atmosphere. Therefore, mankind's activities have deeply influence on climate change.