One gallon of jet fuel burned creates about 19 pounds of C02. A 747 burns about 25,000 pounds of fuel per hour. A round trip from Washington DC to LA would take about 11- 11 1/2 hours. That comes to about 287,000 pounds of fuel. And that results in the production of about 5,462,500 pounds of CO2. A 757 burns about 6,000 pounds of jet fuel per hour. A similar round trip to LA would burn about 69,000 pounds of fuel and create about 1,310,000 pounds of CO2. Barack Obama and Michelle Obama both traveled to Los Angeles on the...