When did the first dinosaurs appear on Earth? What happened to them 65 million years ago? How do we know about dinosaurs—and are there any still alive today? Dinosaurs are absolutely irresistible—and children will love learning about these fascinating creatures and looking at the cool illustrations!

Melissa Stewart is the award-winning author of more than 180 science and nature books for young readers. Hurricane Watch, her first Let’s-Read-and-Find-Out title, was recognized as an Outstanding Science Trade Book by the National Science Teachers Association. While gathering information for her books, Melissa has hiked in tropical rainforests, gone on safari in Africa, and swum with sea lions in the Galápagos Islands. She lives in Boston, Massachusetts. You can visit her online at www.melissa-stewart.com.

Melissa Stewart's profile page

Julius Csotonyi is a natural history illustrator with a doctorate in microbiology from the University of Manitoba. He is widely recognized for his masterful paleo artwork. Dr. Csotonyi’s work is in museums and in the National Geographic Society collection. He lives in Vancouver, British Columbia, in Canada. You can visit him online at www.csotonyi.com.

Julius Csotonyi's profile page

“The Good Question! series continues to offer interesting facts in an appealing fashion. Working within a set format, the skilled authors organize questions and two- or three-paragraph answers in ways that introduce and cover each subject appropriately. On each spread, clearly captioned illustrations -- maps, drawings, close-up photographs, and realistic images -- face the text. The questions are those a child reader might ask. . . . Why Did T Rex Have Short Arms? introduces these early reptiles, describing how and what we know about their physical characteristics and behavior, and offering the most commonly accepted explanation of their extinction. Colorful illustrations introduce a wide range of species, though no explanation is provided for the artist's color and texture choices.. . . . Attractively presented, with up-to-date, accurate information, these science titles are a first choice.”

“The Good Question! series continues to offer interesting facts in an appealing fashion. Working within a set format, the skilled authors organize questions and two- or three-paragraph answers in ways that introduce and cover each subject appropriately. On each spread, clearly captioned illustrations -- maps, drawings, close-up photographs, and realistic images -- face the text. The questions are those a child reader might ask. . . . Why Did T Rex Have Short Arms? introduces these early reptiles, describing how and what we know about their physical characteristics and behavior, and offering the most commonly accepted explanation of their extinction. Colorful illustrations introduce a wide range of species, though no explanation is provided for the artist's color and texture choices.. . . . Attractively presented, with up-to-date, accurate information, these science titles are a first choice.”