Human civilization is now faced with a serious problem that is global warming. The temperature of the earth during the last ten years have increased an average of 4 oC so if this increase can not be reduced then we have to know when to end life on Earth.
The main cause of global warming is the greenhouse effect. This is because CO2 from burning fossil fuels, or due to forest destruction exceeded the earth's ability to do neutralized. The transition function of both land and mangrove forest.
If you do not want this disaster to happen, then from now each individual is responsible for returning the earth to be green, do not use fuels that produce carbon.