Okay, so you've had homemade garlic bread, you're probably well acquainted with cheesy bread, and there's a good chance you've tasted a calzone or two. But have you ever heard of garbage bread?

Garbage can be divided into two types: organic and inorganic. Find out what you should throw out, what you should recycle and what can be composted. Science Trek is available to stream on pbs.org and ...