First of all, the sustainable development of our earth is started from the least. Consequently every human in this world should ask himself a question, what I can do for making the clean earth. One of my offers is turning off the extra light in every corner of our home. This will help to decrease the amount of CO2 burned out to the atmosphere insufficiently, if the only human do so. However, when a lot of families will do it, it will help to save not only the nature, but also the money. Also, one individual can walk rather than using any kind of transport. It will decrease the amount of used gasoline insignificantly. But, whether every human has a habit to walk, the amount of gasoline will decrease in very big rate.
Secondly, the administration of every city should make actions in order to decrease infinite energy consumption. For instance, it can rise up the electricity price. It will encourage people to use less electricity than they do now. And here comes another example. The city administration can turn off the road illumination during specific hours.
The next level where the actions towards energy saving are needed is the national one. Therefore, the activities for saving energy may be written in ecological laws of our country. For instance, the government can restrict using nuclear plants in order to prevent terrible disasters, such as Japanese disaster. Or, the government can encourage big factories to use renewable sources of energy. It can decrease the tax rate to those companies, which use solar panels or wind turbines as an electricity source.
And the last, but not the least, is an...