Courtney Flatt en A Greener Way To Cool Your Foods On The Way To The Grocery Store Your produce and frozen foods could soon arrive at grocery stores in trucks that release fewer emissions. Researchers are developing a clean technology to keep your food cool while it travels.<p>Engineers at <a href="">Pacific Northwest National Laboratory</a> are working to replace refrigerated trucks' diesel-burning cooling system with fuel cells. These fuel cells mix hydrogen and air to create energy; the byproduct is water. Wed, 04 Sep 2013 16:37:00 +0000 Courtney Flatt 43644 at