From tracking the percentage of waste material recycled instead of sent to the landfill, to shrinking the "footprint" of a whole event, it's important to be able to show results and measure your success. When people realize the impact of their efforts, they're much more likely to try a Greener challenge next time.
This list provides an example of the type of data that can be collected to measure the success of your green efforts. These statistics can be used alone or can be used in formulas to help make tell the story of your green event.