Global warming

Over the past 50 years, the average global temperature has increased at the fastest rate in recorded history. And experts think the trend is accelerating: the 10 hottest years on record have all occurred since 1990. Scientists say that unless we curb global warming emissions, average temperatures could be 3 to 9 degrees higher by the end of the century.
Global warming is already causing damage in many ways. For example of Korea, we had worst drought in 100 years of record, 2001. And in 2007, the average nationwide temperature for winter was 2.46 degrees Celsius, the warmest since South Korea began recording the weather. The impacts of global warming are not limited to a country. In 2003, extreme heat waves caused more than 20,000 deaths in Europe and more than 1,500 deaths in India. And in what scientists regard as an alarming sign of events to come, the area of the Arctic's perennial polar ice cap is declining at the rate of 9 percent per decade.
These are main hard situation that we will have if we wouldn't prevent it: Melting glaciers, early snowmelt and severe droughts will cause more dramatic water shortages. Rising sea levels will lead to coastal flooding. Warmer sea surface temperatures will fuel more intense hurricanes. Forests, farms and cities will face troublesome new pests and more mosquito-borne diseases. Disruption of habitats such as coral reefs and alpine meadows could drive many plant and animal species to extinction.
The cause of global warming is carbon dioxide and other air pollution that is collecting in the atmosphere. Coal-burning power plants are the largest source of carbon dioxide pollution - they produce 2.5 billion tons every year. Automobiles, the second largest source, create nearly 1.5 billion tons of CO2 annually.
So, to reduce the amount of CO2 emission, many countries and companies do lots of efforts to develop new technology that is less harmful for environment. And here's the good news: technologies exist today to make cars that run cleaner and burn less gas, modernize power plants and generate electricity from nonpolluting sources, and cut our electricity use through energy efficiency. The challenge is to be sure these solutions are put to use.
Also, there are many simple steps we can take right now to cut global warming pollution. By using a less energy-efficient model, we can reduce carbon dioxide pollution. Instead of using cars frequently, we can take public transportation or you can just walk if the distance for obfective is short. The most important thing to prevent global warming is paying attention to it. Very little thing that we do in daily life can affect to the average temperature of Earth.Make conserving energy a part of daily routine!