But there were exhilarating developments as well. Long believed extinct, the ivory-billed woodpecker was detected in the Big Woods of Arkansas; astronomers discovered a tenth planet in our solar system--complete with its own moon; physicists created a new state of matter using quarks and gluons; and the genome of our closest living relative, the chimpanzee, was sequenced.
These are just some of the biggest science stories of 2005. We've listed our top 25 picks below, in no particular order. But there were, of course, many more findings of note. So consider this list a jumping off point for a fuller exploration of our site as you look back at the year in science. --The Editors
Brain Scans Helps Scientists "Read" Minds