Since the beginning of the industrial age, human activity has produced increasing quantities of CO2. Detailed measurements have been made at the Mauna Loa Observatory, Hawaii since 1958. The graph above shows these measurements. The graphs below extend the CO2 measurement back in time using ice samples and compare with the activities of the industrial revolution indicating the rapid rise in CO2 is correlated with human activity.

This increase in COleads to an increase in global temperate.  Subsequent climate change may become uncontrollable and cause extinction of the human species