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![“Identifying the source of [a] problem and the means to work around it ... is remarkable,” says MIT Professor Harry Tuller, of the discovery of a simple way to significantly increase the lifetimes of fuel cells and other devices. He is seen here with postdoc Han Gil Seo, one of the contributors to this new work.](/sites/default/files/styles/teaser_mini_image/public/post-images/Tuller-in-lab.jpg?itok=kXzSfnwu)