Well, this story isn't about people who live in plastic greenhouses. But it's still pretty cool.

According to Ohio State University's Ohio Agricultural Research and Development Center in Dayton, something called high tunnels are catching on with farmers interested in extending their growing seasons and increasing production. High tunnels look like greenhouses, but they're just simple wood or aluminum frames covered with plastic. They aren't heated; the sun provides all the warmth they need. They're fairly inexpensive, with an average structure costing about $4,000.

In Ohio, the tunnels can extend the growing season by up to four months, according to the article.

The tunnels are catching on outside Ohio, too. A tunnel-farming workship in November that was sponsored by the university attracted farmers from five states.