Stacy McAnulty is the author of many books for young readers, including The Miscalculations of Lightning Girl, The World Ends in April, * Millionaires for the Month,and Save the People!: Halting Human Extinction,* among many, many others! A former mechanical engineer, Stacy writes about math and sci...

Stacy McAnulty is the author of many books for young readers, including The Miscalculations of Lightning Girl, The World Ends in April, * Millionaires for the Month,and Save the People!: Halting Human Extinction,* among many, many others! A former mechanical engineer, Stacy writes about math and science with authority.