Companies are aware of the issue, but many still lack detailed programs for tracing and calculating their carbon footprints over the extended supply chain, according to Luka Powanga, executive director of the Global Commerce Forum.

Jerry Hempstead, chief animator of Hempstead Consulting, shows how shippers can untangle the complex tariffs and surcharges of express and parcel carriers, and implement strategies that can save money while improving service.

Michael McComb, regional vice president of sales with the Hub Group, says there are multiple benefits - both environmental and financial - to participating in the U.S. EPA's SmartWay Transport Partnership program.