Magic in a Drop of Water: How Ruth Patrick Taught the World about Water Pollution by Julie Winterbottom, illustrated by Susan Reagan (Rocky Pond Books, 48 pages, grades 1-5). Encouraged by her father, Ruth Patrick grew up exploring woods and streams, fascinated by what she saw when she looked at her collections under a microscope. She went on to study biology, specializing in diatoms, the microscopic algae found in all bodies of water. Her questions about the effects of pollution on water led her to study both healthy and polluted streams, documenting all the life forms found in each, and discovering that pollution destroyed the balance of life that healthy water had. She became a lifelong advocate for clean water, including helping to write the Clean Water Act of 1972, and continuing to wade into streams and rivers just a few years before her death at age 105. Includes additional information, a timeline, and a bibliography.

Ruth Patrick lived up to her father’s advice to leave the world a better place than she found it, following her passion at a time when women weren’t particularly welcome in the scientific world and making many contributions to our understanding of water pollution and biodiversity. Her story is told in an engaging fashion, and the illustrations do a magnificent job of capturing Ruth’s work and her underwater observations, although I wouldn’t have said no to a slightly larger font for the text.

Through the Telescope: Mae Jemison Dreams of Space by Charles R. Smith, Jr., illustrated by Evening Monteiro (Orchard Books, 40 pages, ages 4-8). A young Mae Jemison peers through the telescope, dreaming of traveling into space. Rhyming text and illustrations explain what she sees: the moon, planets, constellations, and galaxies. As she looks, she imagines floating through space, and the final illustration shows an adult Mae in her astronaut suit standing behind the child. Includes ten facts about Mae Jemison.

This would make a good introduction to Mae Jemison for younger readers, and it includes quite a few astronomy terms and facts which they will find interesting as well. Like Mae Among the Stars, there’s very little biographical information. It would be great to get a longer picture book biography that gives a fuller picture of Jemison’s life.