The holidays are in full swing and people are shopping, wrapping and packing to visit loved ones. Along with the extra fees for checked baggage and seat upgrades, some airlines are also considering weight-based pricing. A recent study looked at how people felt about weighing their baggage and themselves to help reduce emissions and found while over half of travelers are not keen about hopping on the scale, some would be open to the idea -- especially if it aligns with their own interests in the environment.