“Entwined in Charles Darwin’s theories and the tree of life, evolution is clearly explained. Well organized and beginning with a geology time chart, the book breaks out into ever-increasing complexity. Bright covers ancient times and how chemicals and heat acted as an evolutionary catalyst. There is quite a bit in between that is addressed in small bites. Author and illustrator have created a congenial mix, using tree limbs to symbolize the tree of life growing around each distinct blurb and then meandering across the double-page spread. Carpentier has created a bright, cheerful platform for the text. Her depiction of the life form and the tree of life enhances the text’s organization, making the huge time spans manageable in this successful overview… Back matter consists of a glossary and an index. VERDICT A pleasing visual representation…” — School Library Journal

“This fresh approach to evolution provides young readers with an innovative introduction to natural selection and adaptation. After brief bits about Charles Darwin and his theory of survival of the fittest, two-page spreads introduce flora and fauna from various branches of his classification system, highlighting how certain characteristics supported various life forms’ continued existence. For example, the section on ‘Flats, Tubes, and the Indestructibles’ features brief commentary and colorful illustrations of worms (flatworms, Christmas Tree worms), thread-like animals (nematodes and roundworms), worms with legs (or velvet worms), and water bears_tiny critters that can survive for 30 years without eating_and identifies what properties made a difference (developing front and rear ends was a major breakthrough). Subsequent topics include ‘Armored Animals,’ ‘Lots of Legs,’ ‘Big Babies,’ ‘Running on Tiptoes,’ and ‘Mammals that Gnaw’_in short, selected physical aspects that allowed species to thrive, even if just for a while (sorry, dinosaurs). Satisfying picture captions emphasize how these evolving traits led to the ascendancy of certain species, and also offer well-chosen factoids to further pique readers’ curiosity. A boon for STEM collections, this is also a natural for those kids who have already memorized lists of prehistoric raptors and worked their way through the entire animal book canon.” — Booklist (starred review)

“Both an introduction to Darwinian concepts and an exploration of the Earth’s life… The illustrations and layout are spectacular… The graceful, accessible text respects its readers… [It] strikes an excellent balance between upholding scientific research and noting its limits as well as its ongoing, self-correcting, nature. Darwin would approve.” — Kirkus Reviews (starred review)