It belongs to the world Frederick Banting and the discovery of insulin

Persistence is a staple theme in picture books, but it's a treat to read one that goes beyond "I did it!" to "I did it for others." Despite his colleagues' doubt, a small, dirty lab, and occasional setbacks, Frederick Banting kept "analyzing and testing, testing and analyzing" until he triumphantly isolated insulin. At the time, diabetes was a death sentence, yet Banting sold his research for only a dollar, noting, "Insulin . . . belongs to the world." The text explains the exhausting nature of lab work but always returns to Banting's heartfelt joy at helping others. Crisp, colorful digital illustrations add a touch of whimsy: blood cells wind through the pages, and a glowing, smiling insulin blob moves ever closer to Bunting's grasp. Extensive back matter includes a glossary, sources, and an explanation of insulin, as well as the creators' personal connections to diabetes and advocacy for affordable insulin. Young scientists will enjoy this accessible description of a medical breakthrough, while adults may appreciate the lens on perseverance in the name of service.

A simply told tale of how dedication and painstaking work led to the discovery of a treatment for a devastating autoimmune disorder. This exploration of the achievements of scientist Frederick Banting doesn't explain the difference between Type 1 and Type 2 diabetes until the glossary and never mentions gestational or other types of diabetes at all. And some readers may be put off by descriptions of how his research involved removing pancreases from healthy dogs, especially given the author's earlier, insistent references to Banting's youthful love of farm animals. What does come through clearly, however, is his stubborn persistence (following a late-night Eureka! moment about a new approach) in working with colleagues to find a way to isolate the pancreatic hormone he eventually dubbed "insulin," as well as the laudable altruism that led him to pass up big bucks and give away the formula with the titular comment. Along with an indignant complaint about the unjustly high cost of insulin today, the author leaves readers with simple descriptions of the nature of Type 1 diabetes and the mechanism of insulin. In the simply drawn illustrations, the small bottles of medication, the green blood sugar indicators floating above the heads of joyful former patients, and even the lab dogs are depicted with smiling faces. Though major figures are white, brown faces mingle with lighter ones in most of the other lab and outdoor group scenes. Sugary but significant, despite its somewhat unsystematic presentation. (author's and illustrator's notes, bibliography)(Picture-book biography. 7-9) Copyright (c) Kirkus Reviews, used with permission.