1. Fahad Al-Attiya: A country with no water

  2. Ivan Oransky: Are we over-medicalized?

  3. Peter Norvig: The 100,000-student classroom

  4. David R. Dow: Lessons from death row inmates

  5. LZ Granderson: The myth of the gay agenda

  6. Sarah Parcak: Archeology from space

  7. Beeban Kidron: The shared wonder of film

  8. Rebecca Onie: What if our healthcare system kept us healthy?

  9. John Hockenberry: We are all designers

  10. John Hodgman: Design, explained.

  11. Damian Palin: Mining minerals from seawater

  12. Terry Moore: Why is 'x' the unknown?

  13. Diane Kelly: What we didn't know about penis anatomy

  14. Juan Enriquez: Will our kids be a different species?

  15. Quixotic Fusion: Dancing with light

  16. Sebastian Deterding: What your designs say about you

  17. Dalia Mogahed: The attitudes that sparked Arab Spring

  18. William Noel: Revealing the lost codex of Archimedes

  19. Reggie Watts disorients you in the most entertaining way

  20. Shereen El-Feki: How to fight an epidemic of bad laws

  21. Philippe Petit: The journey across the high wire

  22. Hans Rosling: Religions and babies

  23. Nathan Wolfe: What's left to explore?

  24. JR: One year of turning the world inside out

  25. Carl Schoonover: How to look inside the brain

  26. David Kelley: How to build your creative confidence

  27. Jean-Baptiste Michel: The mathematics of history

  28. Tali Sharot: The optimism bias

  29. Renny Gleeson: 404, the story of a page not found

  30. Joshua Foer: Feats of memory anyone can do

  31. Karen Bass: Unseen footage, untamed nature

  32. JP Rangaswami: Information is food

  33. Michael Tilson Thomas: Music and emotion through time

  34. Rory Sutherland: Perspective is everything

  35. Gary Kovacs: Tracking the trackers

  36. Reuben Margolin: Sculpting waves in wood and time

  37. Amory Lovins: A 40-year plan for energy

  38. Liz Diller: A giant bubble for debate

  39. Nancy Lublin: Texting that saves lives

  40. Eduardo Paes: The 4 commandments of cities

  41. Dan Gilbert: The surprising science of happiness

  42. Dan Ariely: Our buggy moral code

  43. Michael Norton: How to buy happiness

  44. Brian Greene: Why is our universe fine-tuned for life?

  45. Christina Warinner: Tracking ancient diseases using ... plaque

  46. Laura Carstensen: Older people are happier

  47. Taryn Simon: The stories behind the bloodlines

  48. Drew Curtis: How I beat a patent troll

  49. Atul Gawande: How do we heal medicine?

  50. Abigail Washburn: Building US-China relations ... by banjo

  51. Tal Golesworthy: How I repaired my own heart

  52. Melinda Gates: Let's put birth control back on the agenda

  53. Frans de Waal: Moral behavior in animals

  54. Frank Warren: Half a million secrets

  55. Lucy McRae: How can technology transform the human body?

  56. Jack Choi: On the virtual dissection table

  57. Chip Kidd: Designing books is no laughing matter. OK, it is

  58. Sherry Turkle: Connected, but alone?

  59. A Taste of TED2012

  60. Marco Tempest: A magical tale (with augmented reality)

  61. Ayah Bdeir: Building blocks that blink, beep and teach

  62. Leymah Gbowee: Unlock the intelligence, passion, greatness of girls

  63. Regina Dugan: From mach-20 glider to hummingbird drone

  64. Donald Sadoway: The missing link to renewable energy

  65. Billy Collins: Everyday moments, caught in time

  66. Taylor Wilson: Yup, I built a nuclear fusion reactor

  67. Andrew Stanton: The clues to a great story

  68. Noel Bairey Merz: The single biggest health threat women face

  69. T. Boone Pickens: Let's transform energy -- with natural gas

  70. Brené Brown: Listening to shame

  71. Rob Reid: The $8 billion iPod

  72. Jonathan Haidt: Religion, evolution, and the ecstasy of self-transcendence

  73. A TED speaker's worst nightmare

  74. Jennifer Pahlka: Coding a better government

  75. James Hansen: Why I must speak out about climate change

  76. Bryan Stevenson: We need to talk about an injustice

  77. Susan Cain: The power of introverts

  78. Vijay Kumar: Robots that fly ... and cooperate

  79. Paul Gilding: The Earth is full

  80. Peter Diamandis: Abundance is our future

  81. Paul Snelgrove: A census of the ocean

  82. Kevin Allocca: Why videos go viral

  83. Tan Le: My immigration story

  84. Shlomo Benartzi: Saving for tomorrow, tomorrow

  85. Shilo Shiv Suleman: Using tech to enable dreaming

  86. Chris Bliss: Comedy is translation

  87. Neil MacGregor: 2600 years of history in one object

  88. Paul Conneally: Digital humanitarianism

  89. Simon Berrow: How do you save a shark you know nothing about?

  90. Lucien Engelen: Crowdsource your health

  91. Jenna McCarthy: What you don't know about marriage

  92. Tyrone Hayes + Penelope Jagessar Chaffer: The toxic baby?

  93. Erik Johansson: Impossible photography

  94. Jack Horner: Shape-shifting dinosaurs

  95. Sheikha Al Mayassa: Globalizing the local, localizing the global

  96. Stephen Coleman: The moral dangers of non-lethal weapons

  97. Neil Burgess: How your brain tells you where you are

  98. Danny Hillis: Back to the future (of 1994)

  99. Erica Frenkel: The universal anesthesia machine