Based on sales for the week ending February 3, 2013

16. The Immortal Life of Henrietta Lacks
Rebecca Skloot, Broadway, $16, 9781400052189

17. The Hare With Amber Eyes
Edmund de Waal, Picador, $16, 9780312569372

18. An Invisible Thread
Laura Schroff, Alex Tresniowski, Howard Books, $14.99, 9781451648973

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

20. End This Depression Now!
Paul Krugman, Norton, $15.95, 9780393345087

21. The 5 Love Languages
Gary Chapman, Northfield, $14.99, 9780802473158

22. How to Be a Woman
Caitlin Moran, Harper Perennial, $15.99, 9780062124296

23. The Devil in the White City
Erik Larson, Vintage, $16, 9780375725609

24. ObamaCare Survival Guide
Nick J. Tate, Humanix, $19.95, 9780893348625

25. What to Expect When You're Expecting
Heidi Murkoff, Sharon Mazel, Workman, $14.95, 9780761148579

26. Steal Like an Artist
Austin Kleon, Workman, $10.95, 9780761169253

27. The Untethered Soul
Michael A. Singer, New Harbinger, $16.95, 9781572245372

28. Heaven Is for Real
Todd Burpo, Thomas Nelson, $16.99, 9780849946158

29. Below Stairs
Margaret Powell, St. Martin's Griffin, $14.99, 9781250023216

30. Destiny of the Republic
Candice Millard, Anchor, $16, 9780767929714

31. The New Jim Crow
Michelle Alexander, The New Press, $19.95, 9781595586438

32. Guitar Zero
Gary Marcus, Penguin, $16, 9780143122784

33. F in Exams
Richard Benson, Chronicle , $9.95, 9780811878319

34. Arguably
Christopher Hitchens, Twelve, $18, 9781455502783

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

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

37. Nothing Daunted
Dorothy Wickenden, Scribner, $16, 9781439176597

38. To Heaven and Back
Mary C. Neal, Waterbrook, $14.99, 9780307731715

39. Clean
Alejandro Junger, HarperOne, $16.99, 9780062201669

40. When I Was a Child I Read Books
Marilynne Robinson, Picador, $15, 9781250024053

41. Catherine the Great
Robert K. Massie, Random House, $20, 9780345408778

42. Dancers Among Us
Jordan Matter, Workman, $17.95, 9780761171706

43. Turn Right at Machu Picchu
Mark Adams, Plume, $16, 9780452297982

44. Empire of the Summer Moon
S.C. Gwynne, Scribner, $16, 9781416591061

45. The Old Farmer's Almanac 2013
Old Farmer's Almanac, $6.95, 9781571985736

46. Gypsy Boy
Mikey Walsh, St. Martin's Griffin, $15.99, 9781250022028

47. Eat to Live
Joel Fuhrman, Little Brown, $15.99, 9780316120913

48. The Greater Journey
David McCullough, S&S, $20, 9781416571773

49. F for Effort!
Richard Benson, Chronicle, $9.95, 9781452113227

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