Global Warming

We have read a lot of articles and papers about global warming. It is really happening and whether we like it or not we are part of it. We might be just an ordinary citizen, but we can do something about it. There are many environmental issues attributed to global warming like climate changed. There is so many the increased in frequency of extreme weather events. The temperature becomes higher and higher and climate changes year by year.
Ex: We don’t have cold weather in winter.
However, sometimes the temperature is extreme cool in spring and summer.
The weather is very unusual during these years.
EX: Tsunami in Southeast Asia;
Hurricane Katrina in America;
Earthquake in China
Volcano eruption in Iceland