Based on sales for the week ending April 3, 2011

16. Committed
Elizabeth Gilbert, Penguin, $16, 9780143118701

17. Packing for Mars
Mary Roach, Norton, $15.95, 9780393339918

18. Have a Little Faith
Mitch Albom, Hyperion, $13.99, 9781401310462

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

20. NurtureShock
Po Bronson, Ashley Merryman, Twelve, $14.99, 9780446504133

21. Eaarth
Bill McKibben, St. Martin's, $14.99, 9780312541194

22. Dead End Gene Pool
Wendy Burden, Gotham, $16, 9781592406067

23. The Baseball Codes
Jason Turbow, Michael Duca, Anchor, $15, 9780307278623

24. Parisians
Graham Robb, Norton, $17.95, 9780393339734

25. Women Food and God
Geneen Roth, Scribner, $15, 9781416543084

26. Taking the Leap
Pema Chodron, Shambhala, $14, 9781590308431

27. Otherwise Known as the Human Condition
Geoff Dyer, Graywolf Press, $18, 9781555975791

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

29. Hellhound on His Trail
Hampton Sides, Anchor, $15.95, 9780307387431

30. Every Day in Tuscany
Frances Mayes, Broadway, $15, 9780767929837

31. Orange Is the New Black
Piper Kerman, Spiegel & Grau, $15, 9780385523394

32. Blink
Malcolm Gladwell, Back Bay, $15.99, 9780316010665

33. Eating Animals
Jonathan Safran Foer, Back Bay, $14.99, 9780316069885

34. Clean
Alejandro Junger, HarperOne, $14.99, 9780061735332

35. The Book of Awakening
Mark Nepo, Conari, $18.95, 9781573241175

36. Mennonite in a Little Black Dress
Rhoda Janzen, Holt, $14, 9780805092257

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

38. Infinite City: A San Francisco Atlas
Rebecca Solnit, Sandow Birk (Illus.), University of California Press, $24.95, 9780520262508

39. The Other Wes Moore
Wes Moore, Spiegel & Grau, $15, 9780385528207

40. Stones Into Schools
Greg Mortenson, Penguin, $16, 9780143118237

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

42. Dance First. Think Later.
Kathryn Petras, Ross Petras, Workman, $8.95, 9780761161707

43. The Omnivore's Dilemma
Michael Pollan, Penguin, $16, 9780143038580

44. Half the Sky
Nicholas D. Kristof, Sheryl WuDunn, Vintage, $15.95, 9780307387097

45. Hungry Girl 300 Under 300
Lisa Lillien, St. Martin's, $22.99, 9780312676810

46. Night
Elie Wiesel, FSG, $9.95, 9780374500016

47. Eat, Pray, Love
Elizabeth Gilbert, Penguin, $16, 9780143118428

48. Now Eat This! Diet
Rocco DiSpirito, Grand Central, $22.99, 9780446584494

49. A Band of Misfits
Andrew Baggarly, Triumph, $19.95, 9781600785986

50. The Checklist Manifesto
Atul Gawande, Picador, $15, 9780312430009