Hazel’s Theory of Evolution

Hazel's Theory of Evolution
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“Warm and memorable.”

Kirkus Reviews

A middle grade novel from Harper
Coming October 8, 2019
ISBN: 9780062791177
Buy it: IndieBound | Barnes & Noble | Amazon

“Just because you don’t understand it doesn’t make it illogical.”

Hazel knows all about life on Earth. She could tell you anything from what earthworms eat to how fast a turkey can run. That’s because when she’s not hanging out with her best friend, Becca, or helping care for the goats on her family’s farm, she loves reading through dusty old encyclopedias. But even Hazel doesn’t have answers for the questions awaiting her as she enters eighth grade.

Due to redistricting, she has to attend a new school where she worries no one will understand her. And at home things get worse when she discovers one of her moms is pregnant. Hazel can’t wait to be a big sister, but her mom has already miscarried twice. Hazel fears it might happen again.

As Hazel struggles through the next few months, she’ll grow to realize that if the answers to life’s most important questions can’t be found in a book, she’ll have to find them within herself.


★ “This vivid first-person narrative revolves around the well-drawn main character as she slowly, reluctantly learns to cope with challenges and to enlarge her circle of friends….A heartfelt novel of family, friends, and change.”

“[Hazel’s] first-person narration is insightful; she’s highly likable, and her troubles and triumphs will sound familiar to many….Warm and memorable.”
Kirkus Reviews

“Bigelow celebrates intersectional diversity with her cast of well-drawn characters. Through a relatable first-person narrative, she…addresses universal conflicts adolescents face while paying tribute to their individuality.”
Publishers Weekly


June 17, 2019 – Stay on the Page

September 12, 2019 – Little Lion Lynnet’s

Cover art by Laura Bernard and design by Laura Mock