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What If? Tenth Anniversary Edition: Serious Scientific Answers to Absurd Hypothetical Questions is coming November 26! You can preorder here: harpercollins.com/products/what-…

Disposal xkcd.com/3005

Demons xkcd.com/3006

Probabilistic Uncertainty xkcd.com/3007

What if everyone pointed a laser at the moon? Watch the latest What If? video in collaboration with MinuteEarth (also on BlueSky)! youtu.be/JqFSGkFPipM

Proterozoic Rocks xkcd.com/3008

The UK tour for the 10th anniversary edition of WHAT IF? starts next week! There are still a few tickets left: fane.co.uk/randall-munroe

Number Shortage xkcd.com/3009

Geometriphylogenetics xkcd.com/3010

Europa Clipper xkcd.com/3011

The Future of Orion xkcd.com/3012

I’m giving away 10 signed copies of the new Anniversary edition of WHAT IF to celebrate 10 YEARS since the book’s release! Enter for your chance to win here: m.cmpgn.page/TvTS0t

There's still time to enter for a chance to win 10 signed copies of the new Anniversary edition of WHAT IF to celebrate 10 YEARS since the book’s release! m.cmpgn.page/TvTS0t

It's here! Check out WHAT IF? 10th Anniversary Edition, with scenarios reimagined at 10x the scale, new art, detailed annotations, a brand-new chapter, and more: xkcd.com/what-if/

Now that the 10th anniversary edition of WHAT IF? is out, remember there are two upcoming events where you can get your books signed in New York and Boston! Many thanks to Strand Book Store and Harvard Book Store for hosting. Reserve your tickets here: xkcd.com/events/

Give the gift of 10x more disastrous scenarios with the What If? Tenth Anniversary Edition: Serious Scientific Answers to Absurd Hypothetical Questions! harpercollins.com/products/what-…