Biking A Dual Purpose – Reduce Carbon Foot Print and Receive Fitness Benefit in the Great Outdoors     Carbon Trading (or emissions trading) is an administrative approach used to control pollution by providing economic incentives for achieving reductions in the emissions of pollutants, and is sometimes referred to as “cap and trade”.  A central authority (usually a government or international body) sets a limit or cap on the amount of a pollutant that can be