Searching for carpools in Michigan, USA:

A measure of the amout of carbon dioxide (CO2) producted as aresult of the combustion of fossil fuies in support of various activities or processes.

Many initiatives have been designed to reduce the carbon footprint on an individual, houhold, community or business entity.  Some resources that assist in calculating the carbon footprint of various activities / processes:

• Carbon Footprint of a Burger - More impact than you'd imagine - think ouside the bun
• Carbon Footpring Calculator - calculate your impact on the environment
• Carbonfootprint.com - Various related information