Jumping on the green bandwagon, paperboard mill companies are now teaming up biofuel producers to create ethanol fuel from scraps of cardboard. The cardboard-produced fuel is actually created by using the 5% of unusable scraps and sending them to Firberight -- a company which then converts the scraps into usable ethanol fuel.
The trial batch of ethanol "is expected to emit 80% less carbon emissions then regular gasoline." The 5% of waste contributes up to 50,000 tons of cardboard waste a year, which can now be turned into fuel. Cardboard-produced fuel seems like a pretty effective way of recycling!