var items = new Array (new ImageMetaData('Purdue researchers demonstrate their method for producing hydrogen by adding water to an alloy of aluminum and gallium. The hydrogen could then be used to run an internal combustion engine. The reaction was discovered by Jerry Woodall, center, a distinguished professor of electrical and computer engineering. Charles Allen, holding test tube, and Jeffrey Ziebarth, both doctoral students in the School of Electrical and Computer Engineering, are working with Woodall to perfect the process. The technology could, in theory, be used to replace gasoline with non-polluting hydrogen for cars. Initially the method will be used in portable electrical generators. (Purdue News Service photo/David Umberger)','http://msnbcmedia.msn.com/i/msnbc/Components/Photos/070517/070517_hydrogen_hmed_6a.jpg','9:26 a.m. ET, 5/17/07','David Umberger / Purdue News Service','Purdue News Service',18719125));