Eschew plastic bags by bringing your own reusable canvas totes the next time you're at the supermarket or store. Because petroleum-based plastic isn't biodegradable, it's certain to outlive you-by about a millennium or so. Each year, thousands of marine animals, including the endangered leatherback turtle, choke to death on plastic trash they mistake for snackable morsels. Our unholy love for plastic disposables has also bred a swirling vortex of plastic trash the size of Texas in the North Pacific Ocean-not surprising when you consider that Americans run through about 100 billion plastic bags annually, using up an estimated 12 million barrels of oil.