Understanding of Global Warming
Global warming is a process of increasing the average temperature of the atmosphere, sea, and land of the Earth. The global average temperature on the Earth's surface has increased 0.74 ± 0.18 ° C (1.33 ± 0.32 ° F) over the past hundred years. The Intergovernmental Panel on Climate Change (IPCC) concluded that "most of the increase in global average temperatures since the mid-20th century is most likely due to the increasing concentration of greenhouse gases due to human activities"  through the greenhouse effect. This basic conclusion has been made by at least 30 scientific and academic bodies, including all national science academies from the G8 countries. However, there are still some scientists who disagree with some of the conclusions expressed by the IPCC.