The EXPLODING POPULATION OF 7 B IS INFLUENCING OUR CLIMATE BY BURNING FOSSIL FUELS THAT EMIT CARBON DIOXIDE, CO2. 1. THE HUMAN INFLUENCE ON WARMING Emissions of the greenhouse gas CO2 are increasing at a rate of 2.5 ppm per year. 2. CONTRAST THIS WITH SLOWER NATURAL PROCESSES 18K – 10K years ago, C02 increased at a rate 1/300th slower. 3. THE IMPACT OF CONTINUING CLIMATE CHANGE Melting of the Arctic is increasing our winter climate extremes.