The amount of carbon dioxide levels in the atmosphere has been increasing for many decades. Many scientists believe that the increase in carbon dioxide levels could lead to global warming, and might trigger abrupt climate changes. You are approached by a future US president for suggestions on what to do about this problem. Based on your answers to exercises 15 and 16, what might be the simplistic approach to reducing the rate of increase of the amount of carbon dioxide in the atmosphere due to combustion in automobiles and trucks? (A: Replace isooctane with hydrogen.)

Use engineering considerations to give insight on the global warming issue.