this EurekAlert page links to a MIT press release describing the operation of the new catalyst and potential applications http://search.eurekalert.org/e3/query.html?qt=Nocera&col=ev3rel&qc=ev3rel&x=12&y=16 Dan Nocera is the main person responsible. Here's a ScienceDaily account http://www.sciencedaily.com/releases/2008/07/080731143345.htm I can't tell how important this development really is. It allows the electrolysis of pH neutral water, apparently. Usual electrolysis requires an alkaline solution, apparently. I don't see any figures about efficiency. It seems to me that it could be important but I can't be sure. Any thoughts?