Based on sales for the week ending April 8, 2012

16. The Social Conquest of Earth
Edward Osborne Wilson, Liveright, $27.95, 9780871404138

17. Bringing Up Bébé
Pamela Druckerman, Penguin Press, $25.95, 9781594203336

18. In the Garden of Beasts
Erik Larson, Crown, $26, 9780307408846

19. Revelations
Elaine Pagels, Viking, $27.95, 9780670023349

20. Mrs. Kennedy and Me
Clint Hill, Lisa McCubbin, Gallery, $26, 9781451648447

21. Thinking, Fast and Slow
Daniel Kahneman, FSG, $30, 9780374275631

22. American Sniper
Chris Kyle, et al., Morrow, $26.99, 9780062082350

23. Killing Lincoln
Bill O'Reilly, Martin Dugard, Holt, $28, 9780805093070

24. Trickle Down Tyranny
Michael Savage, Morrow, $26.99, 9780062083975

25. Escape from Camp 14
Blaine Harden, Viking, $26.95, 9780670023325

26. The Pioneer Woman Cooks
Ree Drummond, Morrow, $29.99, 9780061997181

27. When I Was a Child I Read Books
Marilynne Robinson, FSG, $24, 9780374298784

28. Driving Mr. Yogi
Harvey Araton, Houghton Mifflin Harcourt, $26, 9780547746722

29. What Teachers Make
Taylor Mali, Putnam Adult, $19.95, 9780399158544

30. The Age of Insight
Eric Kandel, Random House, $40, 9781400068715

31. Why Nations Fail
Daron Acemoglu, James A. Robinson, Crown Business, $30, 9780307719218

32. The Righteous Mind
Jonathan Haidt, Pantheon, $28.95, 9780307377906

33. Weeknights With Giada
Giada de Laurentiis, Clarkson Potter, $35, 9780307451026

34. The Lean
Kathy Freston, Weinstein Books, $25, 9781602861732

35. House of Stone
Anthony Shadid, Houghton Mifflin Harcourt, $26, 9780547134666

36. Religion for Atheists
Alain de Botton, Pantheon, $26.95, 9780307379108

37. Rebuild the Dream
Van Jones, Nation Books, $25.99, 9781568587141

38. That Woman
Anne Sebba, St. Martin's, $27.99, 9781250002969

39. Wishes Fulfilled
Wayne W. Dyer, Hay House, $24.95, 9781401937270

40. The End of Illness
David B. Agus, M.D., Free Press, $26, 9781451610178

41. Plenty
Yotam Ottolenghi, Chronicle, $35, 9781452101248

42. The World of Downton Abbey
Jessica Fellowes, St. Martin's, $29.99, 9781250006349

43. Catherine the Great
Robert K. Massie, Random House, $35, 9780679456728

44. The Science of Yoga
William J. Broad, Bobby Clennell (Illus.), S&S, $26, 9781451641424

45. Guinness World Records 2012
Guinness, $28.95, 9781904994671

46. Positive Intelligence
Shirzad Chamine, Greenleaf, $23.95, 9781608322787

47. The Swerve
Stephen J. Greenblatt, Norton, $26.95, 9780393064476

48. Jesus Calling
Sarah Young, Integrity, $15.99, 9781591451884

49. Imperfect
Jim Abbott, Tim Brown, Ballantine, $26, 9780345523259

50. Coming Apart
Charles Murray, Crown Forum, $27, 9780307453426