100 Symbols That Changed the World

Nonfiction writer and researcher Salter (Remarkable Bike Rides; 100 Speeches That Roused the World) explores symbols chronologically from ancient marks for musical notation, religious representations (cross; ankh) and mathematics (equals sign; pi) through the 1970 green recycle arrows, the 1991 AIDS red ribbon, and several meanings for rainbows. Some single entries encompass multiple icons (alchemy symbols; naval communication flags), while others follow a symbol’s change in associations over time (the swastika’s origins are thousands of years old, as a symbol of well-being). Introductory notes briefly discuss how color and shape help symbols quickly and effectively convey information. From the peace symbol and the smiley face to the distinctive skull-and-crossbones of pirate flags and poison warnings, readers will find fascinating tidbits to enjoy. Other books in the series include 100 Science Discoveries That Changed the World, 100 Posters That Changed the World, and 100 Children’s Books That Inspire Our World.