Chili Tornado Quake xkcd.com/2965

Exam Numbers xkcd.com/2966

Matter xkcd.com/2967

University Age xkcd.com/2968

Vice President First Names xkcd.com/2969

Meteor Shower PSA xkcd.com/2970

Celestial Event xkcd.com/2971

What if we teleported the oceans to Mars? Watch the latest What If? video in collaboration with Minute Earth! youtube.com/watch?v=FkUNHh…

Helium Synthesis xkcd.com/2972

Ferris Wheels xkcd.com/2973

Storage Tanks xkcd.com/2974

Classical Periodic Table xkcd.com/2975

Time Traveler Causes of Death xkcd.com/2976

Three Kinds of Research xkcd.com/2977

Stranded xkcd.com/2978

Sky Alarm xkcd.com/2979

Lava Lakes xkcd.com/2980

Could you survive a nanosecond on the Sun? Watch the latest What If? video in collaboration with Minute Earth! youtu.be/UXA-Af-JeCE

We added an additional event for the UK book tour for the anniversary edition of WHAT IF? on November 12th at Theatre Royal Drury Lane! There are still a few tickets left, so take a look if you want to join the fun: fane.co.uk/randall-munroe

Slingshots xkcd.com/2981