Since San Francisco is banning petroleum-based, throwaway plastic bags at store checkout counters, I've wondered if clean-tech companies would rush to supply shops with a bioplastic, biodegradable, two-handle alternative. Other plasticky disposables, like forks at organic takeout eateries, are made from corn, potatoes, and other crops these days.
Alas, things fall apart, especially biodegradable bags holding anything biological (steer clear of my kitchen compost bin). There are plenty of compostable baggies for sandwiches, pooper scoopers, or yard waste. Yet after calling a bunch of bioplastic bag makers, I found that compost-ready bags in shopping-bag sizes don't seem to exist.