Believe in the possible . . . with this brilliantly quirky, thought-provoking novel from New York Times bestseller, three-time Newbery Honor winner Jennifer L. Holm 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 grandfather, a scientist who’s always been slightly obsessed with immortality. Could this pimply boy really be Grandpa Melvin? Has he finally found the secret to eternal youth? With a lighthearted touch and plenty of humor, Jennifer Holm celebrates the wonder of science and explores fascinating questions about life and death, family and friendship, immortality . . . and possibility."Awesomely strange and startlingly true-to-life. It makes you wonder what's possible." -- Rebecca Stead, Newbery Medal-winning author of When You Reach Me

JENNIFER L. HOLM's father was a pediatrician and she grew up listening to him talk about the wonder of antibiotics and how science could change the world. Today Jennifer is the NY Times bestselling author of three Newbery Honor Books, as well as the co-creator of the Babymouse series (a 2013 Eisner Award Winner) and Squish series, which she collaborates on with her brother Matthew Holm.