In September, an international group of scientists, known as the OPERA collaboration, detected some sub-atomic particles called neutrinos apparently moving faster than the speed of light. As is their habit, other scientists around the world raised questions about the experiment. Now, OPERA has repeated the experiment, addressing the objections, & finding that those neutrinos are still going too fast!
Eternally cautious, the international scientific community wants this surprising result repeated by another group (more the better).