Gr 4–7—These titles highlight the most influential athletes, books, inventions, movies, musicians, photographs, scientific observations, and speeches. Readers learn how Muhammad Ali influenced contemporary sports, how Darwin's discoveries changed scientific thought, and more. While there will always be room for debate when creating top 10—esque lists, the authors have selected universally popular subjects and managed to make solid cases for their influence. However, the brevity of the format means nothing more is presented than a quick introduction. Some conflicts are addressed, but most are glossed over (Elvis's appropriation of blues and gospel music is "controversial" for "some"). VERDICT Good for browsing or as a starting point for report writers.