Gifts have been exchanged, returned and donated. Sales racks scoured. But what happened to that resolution to be more eco-conscious and sustainable, it always seems to go sideways in the frenzy of holiday shopping or impulse purchases on Hallmark holidays (check the calendar: Valentine’s Day is around the corner). As concerned as we are about the planet (according to the Pew Research Center, nearly three-quarters of Americans see global climate change as a “very serious”…