An enchanting STEM-and-fairy-filled picture book from the award-winning author-illustrator of The Most Magnificent Thing! All the fairies in Pixieville believe in magic--except Esther. She believes in science. When a forest tree stops growing, all the fairies are stumped--including Esther. But not for long! Esther knows that science can get to the root of the problem--and its solution! Whether you believe in fairy magic or the power of science, you will be charmed by Esther, the budding fairy scientist.