The Book

book cover for What if?

What If?: Serious Scientific Answers to Absurd Hypothetical Questions is a collection of many of the blog's most popular answers, along with brand new weird and wonderful questions. It's available in the US as of September 2, 2014, and coming soon to the world!

The World

Coming soon from publishers worldwide.

  • Language | Publisher | Pub Date
  • United States | Houghton Mifflin Harcourt | September 2, 2014
    available to order from: Barnes & Noble, Amazon, Indie Bound, BAM! [Books-a-million], Google Play, iBooks.
  • United States - Audio | Blackstone Audio | September 2, 2014
    available to order from: Downpour, Amazon, Barnes & Noble.
  • UK & British Commonwealth | John Murray | 04 September 2014
    available for preorder at Waterstones,
  • German | Knaus | 8 September 2014
    available for preorder through Randomhouse
  • Portugese (Brazil) | Companhia das Letras | October 2014
  • Dutch | Unieboek | October 2014
  • Czech | Prah | October/November 2014
  • Spanish | Aguilar (Santillana) | 19 November 2014
  • Japanese | Hayakawa | to be announced
  • French | Flammarion | to be announced
  • Russian | AST | to be announced
  • Hungarian | Athenaeum | to be announced
  • Simplified Chinese (China) | United Sky New Media | to be announced
  • Complex Chinese (Taiwan) | Commonwealth | to be announced
  • Polish | Czarna Owca | to be announced
  • Greek | Klidarithmos | to be announced
  • Turkish | Pegasus | to be announced
  • Korean | Sigongsa | to be announced

The Tour

The U.S. book release tour

Tuesday, September 2
Harvard Book Store at Brattle Theatre
40 Brattle St.
6:00pm (Seating is limited)
Tickets: \$26 tickets on sale August 12 at 9am ET, includes one book, one seat.
Note: this event is now sold out! But, you can still order a signed copy (link below).
More details:
Order a limited number of signed copies of What If? from Harvard Book Store.

Friday, September 5
Barnes & Noble at Union Square
33 E 17th St.
Open event, seating is first come first serve.
More details:

Tuesday, September 9
Town Hall Seattle
1119 8th Ave.
Seating is limited - Note: this event is now sold out!
Tickets: \$5, one seat
More details:

Wednesday, September 10
The Booksmith at Public Works
161 Erie St.
Seating is limited - Note: this event is now sold out!
Tickets: \$34 (includes one book, one general admission seat), \$20 general admission
The bar at Public Works will be serving drinks before, during, and after the program.
This event is necessarily limited to people 21 and older.
More details:

Thursday, September 11
Berkeley Arts & Lectures at the Hillside Club
2286 Cedar St.
Seating is limited - Note: this event is now sold out!
Tickets: \$10 with student ID; \$15 general admission
More details:

Friday, September 12
Google+ Hangout On Air moderated by Hank Green
Location: Online/Various
3:30pm PT/ 6:30pm ET
Note: Anyone can view the Hangout live on YouTube (Friday, 9/12, 3:30pm PT), but only 4-6 xkcd readers will be selected using this form to participate and ask questions within the Hangout itself. Apply for a chance to participate in the Hangout by Monday, August 25. Link to Hangout and more info to come!

Sunday, September 14
An afternoon with Randall Munroe
The Aero Theatre
1328 Montana Avenue
Santa Monica
Seating is limited
Tickets: \$43 includes one book, one reserved seat; \$20 general admission
More details: