Carbon dioxide is a nontoxic gas.
It is formed in our bodies and in nature in the combustion of carbons.
These are contained in all organic materials.
Carbon dioxide - or simply CO2 - is a so-called greenhouse gas.
It causes the greenhouse effect thus determining the climate on our earth.
This is what enables life on earth as we know it.
But when the greenhouse gases are increased by man, the blessing may soon turn into a curse.
This intensifies the greenhouse effect and heats the earth up.
The resulting climatic change is the big problem of our century.