Plastic shopping bags were banned in South Africa in 2003, where some called them the country's "National Flower."

These bags are on the INSIDE of the Columbus Farmers Market. The high fence keeps them from blowing out onto Route 206 (rear) where I first saw them (not as dramatically back lit) during my drive north from Hammonton to Trenton and beyond. Even as I am taking this picture, the market's cleanup crew is along the fence picking up.
In March, San Francisco became the first big American city to ban the use of plastic bags -- unless they're biodegradable. Around here, Ikea has started charging 5 cents to customers who want plastic shopping bags.