As the annual meeting of the world's largest scientific society kicks off in Chicago, Illinois, this morning, there's an atmosphere of celebration despite the chilly temperatures outside. It's not just the double anniversary of both Darwin's and Lincoln's birth....

Last year, we sent two people to cover the annual meeting of the American Association for the Advancement of Science. This year, we're going back with three, so you can count on us covering a broader diversity of topics than the year before. This year's theme...