Every December, our editors and News staff face the challenge of reviewing what science has accomplished around the world in the past 12 months, so as to select our "breakthroughs of the year." The task is an invigorating one, providing a powerful reminder of both the enormous scope and the continual advance of science. Ardipithecus ramidus, reprogramming cells, and human genetic variation topped our lists in recent years. Now it's your turn: What would you dub the major scientific breakthrough of 2010? We're eager to hear your thoughts.
See our picks in our online special section.