What Einstein Didn't Know: Scientific Answers to Everyday Questions
is a nonfiction
book written by Robert Wolke
. It contains answers to everyday questions (e.g. Why do car batteries go dead in winter?
, Why does warm beer go flat?
), attempting to explain them scientifically but without using technical terms (though it often shows technical terms after their definitions). In addition, it also contains bar bets and "Try it" experiments related to the current subject.