When Do Fish Sleep?
After the success of Why Do Clocks Run Clockwise?, we were flooded with mail, which is one reason why some of my favorite Imponderables are in FISH: Why are bowling shoes so ugly? Why is E on top of the eye chart? Why does Mickey Mouse have four fingers? And why are manhole covers round (don't believe everything you read)?
FISH also includes discussions of Frustables that are still submitted as new questions: Why do the English drive on the left? Why are buttons arranged differently on men's and women's clothes? And why does looking up at the sun make many people sneeze?