The subject that I want to talk about it is not knew but it makes a real threaten to our environment.

It is the fossils fuels. It makes change to our clime which the pole North and South dissolve. We see know flood and the hot above 120 F in many countries due to change of clime. 

The article "Fossil Fuel-Free Index Will Help Investors Manage Climate Risks" says that a new index has been launched that will make it easier for investors to steer their investments away from fossil FOSL +0.18% fuel companies, which contribute to climate change and pollution.  Also, fossils fuels are an increase at the price continuously. As the article "Facing the Risk in Fossil Fueled Electricity" by the author Posted June explains the possibility that fuel prices will increase over time. So I think there are many sources, we can use it instead of fossils fuels. The perfect source is solar energy. I choose this source for two reasons. First of all, it is clean source .This is because it comes from the sun and it does not have any chemical changes that causes of pollution."Clean Energy Sources: Sun, Wind and Subsidies" by Jeffrey Bell. Another reason,  it is cheaper than other sources like oil and gas because it is renewable source that does not need a lot of money to pick. It can to recycle while the oil and gas cost many money to get out and after that it uses one time and we need to produce it again and again which means solar energy saves much to our incomer. In conclusion, fossils fuels become a globe problem and many lives at the risk . Governments should stop this pollution sprite to our nation.