Based on sales for the week ending December 18, 2011

16. Outliers
Malcolm Gladwell, Back Bay, $16.99, 9780316017930

17. The Warmth of Other Suns
Isabel Wilkerson, Vintage, $16.95, 9780679763888

18. Earth: The Book
Jon Stewart, Grand Central, $16.99, 9780446199438

19. 1,000 Places to See Before You Die, the Second Edition
Patricia Schultz, Workman, $19.95, 9780761156864

20. The Devil in the White City
Erik Larson, Vintage, $15.95, 9780375725609

21. The Happiness Project
Gretchen Rubin, Harper, $14.99, 9780061583261

22. Moneyball
Michael Lewis, Norton, $15.95, 9780393338393

23. Life
Keith Richards, Back Bay, $16.99, 9780316034418

24. The Best of the Rejection Collection
Matthew Diffee, Workman, $13.95, 9780761165781

25. Awkward Family Photos
Mike Bender, Doug Chernack, Three Rivers, $15, 9780307592293

26. Atlantic
Simon Winchester, Harper Perennial, $15.99, 9780061702624

27. Apollo's Angels
Jennifer Homans, Random House, $20, 9780812968743

28. The Emperor of All Maladies
Siddhartha Mukherjee, Scribner, $18, 9781439170915

29. Inside of a Dog
Alexandra Horowitz, Scribner, $16, 9781416583431

30. The Big Short
Michael Lewis, Norton, $15.95, 9780393338829

31. Lucky Peach: Issue 2
David Chang (Ed.), McSweeney's, $12, 9781936365470

32. The Onion Presents: Christmas Exposed
Quirk, $12.95, 9781594745423

33. I, Steve
George Beahm (Ed.), Agate B2, $10.95, 9781932841664

34. When Parents Text
Sophia Fraioli, Lauren Kaelin, Workman, $10.95, 9780761166047

35. Washington: A Life
Ron Chernow, Penguin, $20, 9780143119968

36. Hitch-22
Christopher Hitchens, Twelve, $14.99, 9780446540346

37. The Best American Sports Writing 2011
Jane Leavy (Ed.), Mariner, $14.95, 9780547336961

38. How to Live
Sarah Bakewell, Other Press, $16.95, 9781590514832

39. Seeing Further
Bill Bryson (Ed.), Harper Perennial, $18.99, 9780061999772

40. The Four Agreements
Don Miguel Ruiz, Amber-Allen, $12.95, 9781878424310

41. You Had Me at Woof
Julie Klam, Riverhead, $15, 9781594485411

42. 1491
Charles C. Mann, Vintage, $16.95, 9781400032051

43. The Glass Castle
Jeannette Walls, Scribner, $16, 9780743247542

44. The Wave
Susan Casey, Anchor, $15.95, 9780767928854

45. The River of Doubt
Candice Millard, Broadway, $15, 9780767913737

46. Food Rules
Michael Pollan, Penguin, $11, 9780143116387

47. Guardians of Being
Eckhart Tolle, Patrick McDonnell (Illus.), New World Library, $14.95, 9781608681198

48. What the Dog Saw
Malcolm Gladwell, Back Bay, $16.99, 9780316076203

49. Let's Take the Long Way Home
Gail Caldwell, Random House, $14, 9780812979114

50. The Tiger
John Vaillant, Vintage, $15, 9780307389046