Thursday, April 10, 2008
How to deal with global warming
Increasing fuel efficiency and using reusable materials can reduce the CO2 emissions, but protecting the forests is more important in solving this problem. Increasing the fuel efficiency is a cost-effective and technologically feasible method to address the threat of global warming, benefit our economy, and protect public health. It is not only saving energy, but also protect the environment.The large-scale CO2 savings that are necessary require a shift to renewable fuels. we should look for fuels, whose carbon percentage is low so that it will produce lo CO2 emission. we should encourage this shift and also do something to help it to be done, for example demonstration. when compared to these two points, protecting forests is more important. The reason is that forests are the first place to absorb greenhouse gas CO2. Most of the CO2 is absorbed by the forests. When there are not enough forests, the greenhouse gas will accumulate and last for a very long time. Deforestation—the cutting and burning of forests that trap and store carbon—accounts for about another 20 percent. Scientists agree that if we wait 10, 20, or 50 years, the problem will be much more difficult to address and the consequences for us will be that much more serious.
These solutions won't only reduce global warming, many will save us money and create new business opportunities.Then we have to let consumers know what to do and provide incentives to help all of us make better choices.
Monday, March 31, 2008
Water pollution
Water pollution is a very serious problem is China. There are three main causes, industry pollution, household waste, over-use fertilizer. The main cause for the industry pollution is the wrong develop concept which puts the economy development at first place, but pays less attention to the environment. So people pollute the environment to maximize economic benefit. And the government does not have very strict laws to punish companies who are polluting the environment. Another main reason for the water pollution is household waste. Waste cannot be fully dealt with because the technology can not catch up. Therefore, there is more and more rubbish thrown into rivers directly or put onto river banks without dealing with it. The third main cause for water pollution is over utilizing of fertilizer and organic nutrients. Over utilizing of fertilizer makes the populations of aquatic bacteria increase rapidly. The bacteria use too much oxygen in water to decompose the organic nutrients and that kills differ forms of lives in water and produces some kind of poisons which kills more life forms. The water pollution has a lot of seriously bad effects. Polluted water costs a lot to meet the standard for using and drinking. Polluted water affects the biodiversity, many kinds of animal species died out because of water pollution. The polluted water also causes very serious diseases. There are lots of reasons that lead to the water pollution, and water pollution brings a lot of trouble to people.