AN INSTANT NEW YORK TIMES BESTSELLER!

An NPR Best Book of 2022

"The questions throughout What If? 2 are equal parts brilliant, gross, and wonderfully absurd and the answers are thorough, deeply researched, and great fun. . . . Science isn t easy, but in Munroe s capable hands, it surely can be fun." TIME

The #1 New York Times bestselling author of What If? and How To answers more of the weirdest questions you never thought to ask

The millions of people around the ...