We have increased atmospheric CO2 by 40% in the last 200 years. Atmospheric CO2 is now at its highest level ever recorded, and the Antarctic ice core record goes back 600,000 years. Every year we are adding 10 billion tons of CO2 to the atmosphere. At the current rate in 100 years we will have added 1,000 billion tons of CO2 to the atmosphere. What do you think the effect of 1,000 billion tons of CO2 will be?