Jennifer Kahn's "Stripped for Parts" was selected as the lead story of this year's Best American Science Writing because, as Dava Sobel, best-selling author of Longitude and Galileo's Daughter, reveals, "it begins with one of the most arresting openings I have ever read." In "Columbia's Last Flight," William Langewiesche recounts the February 1, 2003, space shuttle tragedy, along with the investigation into the nationwide complacency that brought...