What if you spent an entire week carrying around all the garbage you produced -- every apple core, every paper napkin, every glossy piece of junk mail? By the end of the week, the bag would be pretty heavy. As a result, you'd be aware of your own waste production, and its burden on you -- and on the Earth. Of course, it's not practical to carry our waste around with us all the time, but in this month's Global Citizen column, that weighty bag becomes a potent metaphor for living responsibly. Vermont writer and activist Elizabeth Sawin counsels us to uncover ways to make ourselves and those around us accountable for the environmental and social impact of our actions, only on the Grist Magazine website.