When it comes to climate change, you have to distinguish between two things. First, there is natural climate change, over which humans have no influence. It is said that the last ice age ended about 10,000 years ago and that since then the average temperatures on earth have risen steadily.

Erratic boulders, which are huge round cut pieces of stone, show that glaciers transported them over hundreds of kilometers from the north to the south. Terminal moraines show how far the ice age armor had advanced. Geology thus leaves no doubt about these processes. The history of the earth shows constantly changing warm and ice ages. This rhythm changes every 300,000 to 600,000 years and therefore a long warm period should lie ahead of us.

This climate change cannot be influenced by us. But there is a second influence on the climate, which can only be attributed to man. For about 100 years, since the industrialization of the world and the resulting use of fossil fuels such as oil, coal and natural gas, the average temperature of the earth has been rising faster than it would without human influence.

This is clear: After all, there are more and more cars driving around the world, there are more and more people in the world who want to be warm in winter and burn oil and coal to do so, there is an ever-increasing demand for electricity for households and for industry, for the generation of which a great deal of coal and natural gas is still being burned. There are now eight billion people on earth, which represents an enormous consumption mass. And they all want to live, drive a car, use a smartphone, eat, sleep and live, and industry is striving to fulfill all the wishes of these people.