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TSince the Industrial Revolution, the need for energy to run machines has steadily increased. Some energy, like the energy you need to do your homework, comes from the food you eat. But other energy, like the energy that makes cars run and much of the energy used to light and heat our homes, comes from fuels like coal and oil – fossil fuels. Burning these fuels releases greenhouse gases. There have been a number of natural disasters this year, including wildfires in Russia, and torrential rain in Canada. These events have destroyed many wheat crops, and the locust swarms present another problem that is expected to bump up grain prices. Those situations are tell us, we must be do something to change our life style to protect our Earth and give our children have a good life environment.