Now a Netflix series! #1 New York Times BestsellerA Wall Street Journal BestsellerA Usa Today BestsellerInspired by mathematician Ada Lovelace and physicist Marie Curie, this #1 bestseller champions Stem, girl power, and women scientists in a rollicking celebration of curiosity, the power perseverance, and the importance of asking Why? Ada Twists head is full of questions. Like her classmates Iggy and Rosie (stars of their own New York Times bestselling picture books Iggy Peck, Architect and Rosie Revere, Engineer), Ada has always been endlessly curious. Even when her fact-finding missions and elaborate scientific experiments dont go as planned, Ada learns the value of thinking through problems and continuing to stay curious. Ada is an inquisitive African American second grader who was born to be a scientist. She possesses an unusual desire to question everything she encounters a tick-tocking clock, a pointy-stemmed rose, the hairs in her dads nose, and so much more. Adas parents and her teacher, Miss Greer, have their hands full as the Adas science experiments wreak day-to-day havoc. On the first day of spring, Ada notices an unpleasant odor. She sets out to discover what might have caused it. So Ada uses the scientific method in developing hypotheses in her smelly pursuit.