How was the development of the land by man? What impact has this had on the nature of the earth?

Scientists believe that the first people originated in Africa. There are favorable conditions for life. Warm climate, fertile soil.
With the development of the Earth, man increasingly spoiled its nature. Thousands of power plants, factories and factories have been built. The ecological environment is polluted every day. In some 4000 years nothing will remain of the nature of the Earth.