The article considers one of the key factors affecting the climate - human activity. First of all, it is associated with emissions of carbon dioxide into the atmosphere, which creates a kind of greenhouse above the surface of the planet. The second factor is related to excess solar energy, which has accumulated over millions of years in oil, gas, coal, peat and other fossil hydrocarbons. Particular attention in the study is paid to those problems and methods of solution that can help or weaken global warming.