SCIENCE: Who’s that knocking at ORNL’s front door? Yep, it’s China (again and again). “Oak Ridge National Laboratory received thousands of foreign visitors in 2011, with the total up by about 800 over the previous year. There were 114 different countries represented, but China again topped the list in a big way. More than a fifth of the lab’s total foreign visitors were from China. It’s at least the fourth year in a role that China has headed the roster at the U.S. Department of Energy’s largest science lab, having more than twice as many visitors as the next country (India).”