image: An image taken from the simulation of a hypothetical nano-conveyor belt designed to selectively transport molecules across a membrane. This image relates to an article that appeared in the June 24, 2011, issue of Science, published by AAAS. The essay, by Charles Xie at The Concord Consortium in Concord, Mass., and colleagues was titled, "Computational Experiments for Science Education." view more
Credit: [Image © <i>Science</i>/AAAS]