Believe in the possible . . . with this New York Times bestseller by three-time Newbery Honor winner Jennifer L. Holm. A perfect Father's Day read about a child's relationship with her grandfather

Galileo. Newton. Salk. Oppenheimer. Science can change the world . . . but can it go too far?

Eleven-year-old Ellie has never liked change. She misses fifth grade. She misses her old best friend. She even misses her dearly departed goldfish. Then one day a strange boy shows up. He's bossy. He's cranky. And weirdly enough . . . he looks a lot like Ellie's...