Motor Vehicle Carbon Emissions      Air Travel Carbon Emissions  
  Car 1: Annual km travelled                     Medium haul flights - Johannesburg - London  (+- 10 hours)
  Car 2: Annual km travelled    Number of return flights per year
  Car 3: Annual km travelled    x 8300 kg of CO2 per return flight
  Equals total km per year   Equals CO2 emissions (kg) per year
  x 0.21 kg of CO2 per km   x 1 Tree per tonne of CO2
  Equals CO2 emissions (kg) per year   Equals number of trees to offset CO2
  x 1 Tree per tonne of CO2
  Equals number of trees to offset CO2   Long haul flights - Johannesburg - Miami  (+- 14.5 hours)
Number of return flights per year
  Air Travel Carbon Emissions     x 10056 kg of CO2 per return flight
  Short haul flights - Cape Town to George  (+- 30 minutes)   Equals CO2 emissions (kg) per year
  Number of return flights per year   x 1 Tree per tonne of CO2
  x 500 kg of CO2 per return flight   Equals number of trees to offset CO2
  Equals CO2 emissions (kg) per year      
  x 1 Tree per tonne of CO2      
  Equals number of trees to offset CO2      
                                              Your total amount of carbon  emissions (tonnes):
         No. of trees needed to offset
your carbon footprint:
            
                Click here to plant a tree and make a difference