The probability of the climate-changing already came to the front in the early 1970s. They did researches for exploring the environmental influences of gases which derive from burning fossilial fuels. The results of the following years show the atmosphere's carbon-dioxide of the Earth's surface is raising too. We have to accept that the natural climate changings influences not just in the past, but in the present. Uncertainty is getting bigger about the global warming in 2100. There will probably be drier climates in the northern and wetter climates in the southern hamisphere.