UPS Expands Carbon Offsetting Program Internationally, But Does It Make Sense?

UPS recently became the first small package carrier to offer carbon offsets to customers. Now the shipping company is upping the ante by expanding its carbon neutral shipping program internationally to over 35 countries. The service is cheap, ranging from 5 cents to 75 cents, and easy, too--it requires customers to just check a box during the online shipping process. But does it make sense?

UPS claims that its carbon offsets take all steps of the shipping process into account, including air...