With the development of modern society and the improvement of life quality, more and more energy are required today. However, traditional method to get energy often bind with waste of resourses and environment polution, so it’s important to find an affordable and clean energy for human to use.
Energy resources can be divided into renewable resources and nonrenewable resources. Nowadays, the most widely used energy are nonrenewable resources or produced by nonrenewable resources. For example, electric energy are most produced by coal, which is nonrenewable resource, so we cannot use it in long term. Some energy resources such as wind energy, solar energy and hydroenergy are renewable resources, which means we can use them without worry about use up.
Generally speaking, wind energy and solar energy can be exploited with nearly no damage to environment, so them attract energy scientist most today. But there are still some difficult for the exploite of them, such as the low energy translate efficiency and high cost. Solar power station and wind power station have already been established on where have huge resources, but they are far from meet people’s demand.
In conclusion, the clean and renewable energy are replacing traditional energy step by step. Although there are still some limitation and disadvantage of those new energy, we will cover them and make energy affordable for both human and environment.
ANRAN 
Exploring renewable fuels is critical since apart from fossil fuels releasing carbon dioxide, it will use up. However, the future is unpredictable. By this I mean, how to increase the production of new energy. After all, the scale is still limited.
I hope green energy could cover our life some day!
Thank U for your discussion.
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Thanks for your comment. Just like what you said, the nonrenewable resources will be used up one day in the future, we should find new renewable fuels to cover our life.
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Although the media and government now encourage people to use more renewable and clean energy, these things have been too limited for decades. Therefore, in today’s society where oil and coal are more affordable, I think that trying to improve the utilization of mainstream resources can produce more benefits than developing clean energy.
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Clean and renewable energy is somehow already in use in our life. There are some electric car (Tesla) on the road. But I believe we can do more about it. This problem need everyone of us to make some effort.
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