"Millions of people visit xkcd.com each week to read Randall Munroe's iconic webcomic. His stick-figure drawings about science, technology, language, and love have a large and passionate following. Fans of xkcd ask Munroe a lot of strange questions. What if you tried to hit a baseball pitched at 90 percent the speed of light? How fast can you hit a speed bump while driving and live? If there was a robot apocalypse, how long would humanity last? In...

Told in two voices, when Arthur, a summer intern from Georgia, and Ben, a native New Yorker, meet it seems like fate, but after three attempts at dating fail they wonder if the universe is pushing them together or apart.

"What if you woke up one morning and you had sprouted a dinosaur body part overnight? What If You Had T. rex Teeth? -- the next imaginative book in the What If You Had series -- explores what would happen if you looked in the mirror and saw that you had become part dino! From a Velociraptor's sharp sickle-tipped toes to a T. rex's giant curved teeth, and from the body armor of an Ankylosaurus to the long neck of a Brachiosaurus -- discover what it...

"What if you woke up one morning and your eyes weren't yours? What If You Had Animal Eyes?--the next imaginative book in the What If You Had series--explores what would happen if you looked in the mirror and saw an pair of animal eyes instead of your own! From the chameleon's eyes that can point in different directions, to the colossal squid's eyes that shine in the dark, discover what it would be like if you had these special eyes--and find out why...

"What if you woke up one morning and you had sprouted a tail overnight? What If You Had An Animal Tail? -- the next imaginative book in the What If You Had series -- explores what would happen if you looked in the mirror and saw that you had an animal tail! From a peacock's showstopping tail to a scorpion's dangerous stinger, discover what it would be like if you had one of these special tails -- and find out why your own tailbone is just the right...

Talks about different animals' feet and possibly what you could do if you had those feet.

Describes the characteristics of different animals' teeth, including beavers, camels, Bengal tigers, and narwhals.

What if one day when you woke, the hair on your head wasn't yours? What if, overnight, a wild animal's hair grew in, instead?

An imaginative look at airplanes through such questions as "What if airplanes didn't have air?" and "What if airplanes could go into space?"

Explores the world of mammals by answering such questions as "What if giraffes had short necks?" "What if a bat couldn't hear?" and "What if whales could breathe underwater?"