Thursday, April 10, 2008

How to deal with global warming

The earth’s climate is changing due to human activities that release greenhouse gases into the air. The situation will lead to increased severe weather, habitat destruction ,flooding , and diseases, all of which will have serious impacts on our society. In order to reduce our contribution to global warming, we could do a lot of things in key areas of human and environmental health: energy efficiency, sustainable materials and forests protection.
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.

Sunday, March 16, 2008

Zero waste is ‘better’ than land-filling

When comparing two types of waste disposal schemes in China, zero waste is more suitable than land-filling on the surface. Land-filling is used in many countries, but it is dangerous. Burying the rubbish does not mean it disappear, but exists deep underground. The poisons in waste can spread out through the underground water as well as the earth. Zero waste aims to recycle the waste and reuse it, which is turn waste to treasure. If there is no waste, no pollution will be caused by waste. This is the reason for zero waste to environmental friendly. Land-filling is very costly. Government need to invest a lot of money to bury the solid rubbish produced every day. But zero waste is a new way to reuse waste and make the waste into ‘resource’, which can create business opportunities and employment for people. From the two aspects above, zero waste is definitely good for every country. But facts are a little different. Zero waste is difficult to achieve and it is more costly to design to make full use of raw materials. For many developing countries like China, land-filling is much cheaper than zero waste. Only these developed countries who realize the environment is more valuable will invest large amount of money to develop the zero waste system. Many developing countries just do not have that much of money to invest the environment. Even though it sounds good to have zero waste, it is not applicable in my country.

Sunday, January 27, 2008

The meaning of my life

I don't know what is the real meaning of my life, and I am looking for it. I tried to find the meaning of my life, but I did not find it. I had a dream in my mind for about 10 years, that is to be a doctor and do something for the people who is living in pain and make them happy. And I thought, the happiness of others which is related to me will make me happy. But the dream became a dream that will never going to be true after I made a little mistake, I chose the wrong major. And after that things changed, I don't know what I should do. I never knew without a power dream had such a great influence. Then I felt blue for a long time, tring to think about the meaning of my life, but I can not get a good result. Then mom told me, "Just let it go, you will know it in the future, what you need to do now is study hard and absorb the knoledge which will help you in the future. And don't think too much." And I believed another sentence" God has a plan for you!" And now, I have a dream which is to make people who loves me happy.