For the last couple years, I’ve been answering your science questions on What If.
Today, I’m excited to announce that the What If? book is coming!

What If?: Serious Scientific Answers to Absurd Hypothetical Questions will be published September 2nd by Houghton Mifflin Harcourt. Starting today you can pre-order it from your favorite bookseller (Barnes & Noble, Amazon, Indie Bound). There are also foreign editions, including a UK and Commonwealth edition and a German edition.
As I’ve sifted through the letters submitted to What If every week, I’ve occasionally set aside particularly neat questions that I wanted to spend a little more time on. This book features my answers to those questions, along with revised and updated versions of some of my favorite articles from the site. (I’m also including my personal list of the weirdest questions people have submitted.)

Preorder today to get a copy as soon as it comes out!
Any chance of having a Brazilian Portuguese version?
LikeLike
Well… It’s about time.
LikeLike
What if… buying a hardcover copy got us an ebook copy…
LikeLike
Awesome! Looking forward to it!!
LikeLike
I can’t wait! What if is probably one of my favourite reads!
LikeLike
What if your book was delivered by Amazon drones and I mistook them for Predator drones, defending myself accordingly?
LikeLike
How can I get a signed copy?
LikeLike
I lett a bockshop order it for me, this is to decrese the risk of me being atacked by a bobcat
LikeLike
Any chance of a PDF version?
LikeLike
I will order one as soon as it’s available at amazon.ca or chapters.ca in hard cover.
Of course, a signed one would be nice.
LikeLike
+1 for the signed hardcopy idea.
I’d go for that…. ( of course, i already pre-ordered my copy on amazon… )
LikeLike
Hey, I submitted by question some time ago – not that I am certain my question is bound to end up in the book, but I am still curious if it did… will we see some sort of list of all the questions in the book, or only way to find out for sure is to buy the book?
LikeLike
How does the effleurage massage stroke induce relaxation?
LikeLike
Can you personally robosign my copy?
LikeLike
What if then else should cover it.
LikeLike
What if I want to do a mouse scroll-over on the pictures? How does that work with a physical book?
LikeLike
Thanks for making this available on Kindle!
õ¿õ¬
LikeLike
Two questions:
a. Can you believe it that your what-if series was successful enough that you’re writing a book?
b. Will it have alt-text?
LikeLike
Hello xkcd community. Thanks to Randall for coming out with his new book and bestowing upon us his greatness. To celebrate, we’ve made a tribute video to honor this occasion. Check it out! https://www.youtube.com/watch?v=ihRaw0S7HRo
LikeLike
I had to pre-order this. I’ve read this every tuesday (excluding holidays of course, and that one family emergency) since day one. It is really the only thing I have to look forward to on Tuesdays.
LikeLike
Thanks Randall!
Yes Joseph Stone, it’s about time, but it’s not about Time (xkcd.com/1190), though the ever-faithful TimeWaiters still Wait for it.
LikeLike
The funniest part is scrolling through the “Customers Who Bought This Item Also Bought” section for the amazon pre-order page.
LikeLike
I hope this book won’t have DRM…
http://xkcd.com/488/
LikeLike
Yay! I am becoming a teacher and I have loved reading these, I think it would be awesome to incorporate these into my math/science lessons, thanks!
LikeLike
Now if only Duke Nukem 3D was pre-announced like that… Oh, wait LOL!
LikeLike
Really looking forward to it and so happy to see a UK edition.
LikeLike
What if pre-ordering got us a signed copy?
LikeLike
What’s a book?
LikeLike
Greetings from Canada. Okay, I ordered a hard copy. Now stop messing around in here and hurry up and write it! (please)
LikeLike
Is the book good for reading on an ereader, or would you recommend hard copy?
LikeLike
What’s the difference between “ordering” and “pre-ordering?”
LikeLike
Soon after seeing the headlines about the “what if george washington died during the revolutionary war” my thoughts turned to what if Washgton was just filling in as the lessor to someone who had died, but who would have been a much much much better first president. Historical Glorification is an unfortunate side effect of being the victor.
LikeLike
Do you want to have a Chinese version of the book what if? Many people is interested in it. Translating is not a question.
LikeLike
Time difference is also not a question…
LikeLike
было бы забавно с Вами поговорить. Я иногда так делаю, в каком-то кусочке своего сознания. Чудесного дня
LikeLike
This is a serious question and not an annoying one… 😉
Is there a difference between the “normal english US” version and the UK Commonwealth version? I want the 100% pure unchangend uncensored un-anything one…
Thank and congratulations…
LikeLike
This is so cool! I’m getting one for me and one for…. pretty much everyone else I know.
LikeLike
Oh, that’s nice! I know a lot of people whose next Christmas presents were decided by this post xD (+one for my bookshelf)
LikeLike
I wonder how many times I’ll put my finger on an image while reading the book and wait for an alt-text to appear.
LikeLike
I just preordered your book because I really enjoy your ‘what if’ thread. Have you considered putting on ‘what if’ into your book that is a reader favorite? Maybe get a selection and open a poll, or take an open poll first and narrow it down and have a final poll? It might generate extra interest and attention to have a ‘reader favorite’ tagged on one ‘what if’ in your new book.
LikeLike
Hi.
I’d love to buy your book. Unfortunately…money. Do you think you could consider selling it as an ebook on the Google Play Store? 🙂
Thanks.
LikeLike