PositiveThe Wall Street JournalThis spirit of curiosity proves an asset to Ten Tomatoes That Changed the World—the writer’s reactions and discoveries often seem to be simultaneous with those of the reader. Mr. Alexander holds forth with the goofy charm of a high-school math teacher—just swap out the trapezoid jokes for tomato puns—keeping his lessons droll, not dull ... I don’t know if even the most delicious summer tomato can explain our place on the planet. But knowing more about its improbable history makes every bite that much sweeter.