The Greenhouse Effect and Global Warming

Abstract

From the beginning of the 20th century, the world average temperature rose more than 1 {\textdegree}C. In the northern hemisphere, after the World War II to the middle of the 1970s the cooling trend appeared because human activities emitted ever more dust and smog particles that blocked sunlight. After the middle of the 1970s the air pollution was almost settled in developed countries and the greenhouse effect was enhanced by a rapid increase in the atmospheric carbon dioxide concentration. The temperature rise became sharper with time and was about 0.26 {\textdegree}C for 10 years from 2007. The abnormal weather induced by global warming resulted in the disaster to cause a large number of dead people in many areas in the world. Implementation of no fossil fuel combustion must be done urgently by the cooperation of the whole world.