To day, our world has changed dramatically. And one is the phenomenon of " global warming ", cause of global warming, it came from people. For example, deforestation Pollution emission to air. These things cause inpact on everything, regardless of whether it is a person or animals like polar bears that have not food to eat because of the melting polar ice. So, we must help each other to increase the planting of green areas. Reduce polltion emission and reduce energy consumption. For the beautiful world, we must help each other our world would be a stunning comeback to same.