-- Sarah Hunter--Booklist "December 1, 2015"

spotlights another groundbreaking woman scientist: Marie Tharp, the oceanographic

cartographer whose mapping of the Atlantic seafloor yielded key evidence

confirming the theory of continental drift. Tharp holds the narrative reins here,

and her voice, as imagined by Burleigh, generally rings true. As an adolescent, she

describes her passion for maps and imagines one speaking to her: "Have an adventure.

Explore. Discover something new"--a bold challenge for a young woman

in the 1930s. Burleigh also touches on the discrimination Tharp faced. Applying

for a position as a scientist, she is informed: "We don't need any more file clerks."

A sexist boss won't let her join ocean expeditions: "Having a woman on a ship is

bad luck." (No sources are provided for these quotes.) Burleigh's writing is clear,

conversational, and lyrical on occasion. He handles the science content well; it's

never too dry or overly technical. He also portrays scientists realistically, actively

engaged in and arguing about their work. Colón's illustrations, a textured wash

of sea- and earth tones, are thoughtful and attractive and accurately reflect the

time period. A final, memorable spread shows a contemporary girl looking over

her shoulder at Tharp; it's a subtle nod to Tharp's importance as a role model, as

well as to the importance of other women scientists, past, present, and future.

Back matter includes further biographical details, a glossary of science vocabulary,

a bibliography, websites (one with a slight error), and related activities.--The Horn Book Magazine "January/February 2016"