One Iguana, Two Iguanas: A Story of Accident, Natural Selection, and Evolution

One Iguana, Two Iguanas: A Story of Accident, Natural Selection, and Evolution

by Sneed B. Collard III


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2020 Outstanding Science Trade List

A Junior Library Guild Selection

A much-needed contribution to the children’s literature about evolution

Natural selection and speciation are all but ignored in children’s nonfiction. To help address this glaring deficiency, award-winning children’s science writer Sneed Collard traveled to the Galapagos Islands to see for himself, where Charles Darwin saw, how new species form. The result is this fascinating story of two species of iguana, one land-based and one marine, both of which developed from a single ancestor that reached the islands millions of years ago. The animals evolved in different directions while living within sight of one another. How is that possible?  

Collard uses the iguanas to explore Charles Darwin’s great discovery.

F&P Level V

Product Details

ISBN-13: 9780884486497
Publisher: Tilbury House Publishers
Publication date: 12/04/2018
Pages: 48
Product dimensions: 8.10(w) x 10.10(h) x 0.40(d)
Lexile: 1000L (what's this?)
Age Range: 8 - 12 Years

About the Author

Science writer Sneed B. Collard III (Missoula, MT; is the author of more than 80 children’s books, including One Iguana, Two Iguanasand Catching Air. He has received the Washington Post Children’s Book Guild Nonfiction Award for his body of work, and his books are featured regularly in the Junior Library Guild, NSTA/CBC Outstanding Science Trade Book lists, and other best-of lists.

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