Greenhouse Gas

Today, I heard news that the amount of a domestic exhaust of the greenhouse gas in 2005 had become 1.36 billion tons that were 0.2% more than 2004. This is the highest numerical value in the last. I was surprised to hear this news. Recently, there are a lot of laws concerning the environment. A lot of enterprises also are considering the environment. I thought that we were making an effort for the environment. However, the effect is not achieved actually at all. What should we do to reduce greenhouse gas? I think that we should think about this problem more seriously.