Colleges ditch cafeteria trays to save water

Colleges around the country have found a new way to conserve water and energy - eliminating trays in their cafeterias. Two of the biggest companies that run college cafeterias, Aramark and Sodexo, say almost half of the colleges and universities they work with are dumping their trays.

Why? Getting rid of the trays means a lot fewer dishes to wash, and that means major water and energy savings. So far Georgia Tech says it has saved 3,000 gallons of water per day without trays, and the University of Florida estimates it will save 470,000 gallons annually.

Another added benefit - less food waste. According to an Aramark study, when trays aren't used, people waste 25% to 30% less food. I guess when you have to carry it yourself, that second brownie doesn't look so appealing.

Learn how you can conserve energy at home or at school.