The world is run by catalysts. They clean up after cars, help make fertilizers, and could be the key to better hydrogen fuel. Now, a team of chemists, led by Xiaohu Xia from Michigan Technological University, has found a better way to make metal catalysts. Last week, Nano Letters published the team's study, which covers how the researchers made a catalyst for the first time out of the metal ruthenium. The break-through is not limited to this one metal, however. Xia says the process they developed is most important.