In his latest eye-popping work ofpicture booknonfiction, the Caldecott Honor winning author-illustrator Steve Jenkinsexplains how formost animals, eyes are the most important source of information about the world in a biological sense.The simplest eyes clusters of light-sensitive cells appeared more than one billion years ago, and provided a big survival advantage to the first creatures that had them. Since then, animals have evolved an amazing variety of eyes, along with often surprising ways to use them."
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