Your business footprint is calculated by summing all your CO2 emissions, then taking away your sequestrations.
Your result is:
kgs of CO2e per year
where CO2-e (carbon dioxide equivalent) is the amount of CO2 required to produce the same amount of warming as all the different greenhouse gas emissions combined
Your Carbon Footprint
What can you do ?
One of the options available to your business are "carbon offsets", available through most airlines. These fund reforestation projects which, during their lifetime, will take enough CO2 out of the atmosphere to offset what the airline puts in to it.
Air New Zealand's program is called FlyNeutral.