A Grand and Bold Thing

How do you map infinity, and make the result elegant, comprehensible, and useful? Such was the challenge facing astronomer Jim Gunn with the Sloan Digital Sky Survey, a new map of the universe that enlisted the expertise of hundreds of astronomers and led to revolutionary discoveries. Anyone who has ever marveled at the night sky will enjoy Ann Finkbeiner's lucid and thrilling account of how the heavens spilled their secrets.

July 23: Jessica Mitford died on this day in 1996.

Crime fiction legends Dennis Lehane and Michael Connelly discuss the new book that unites their beloved sleuths Patrick Kenzie and Harry Bosch.