Ellie's scientist grandfather has discovered a way to reverse aging, and consequently has turned into a teenager--which makes for complicated relationships when he moves in with Ellie and her mother, his daughter.

Ada Twist is a very curious girl who shows perseverance by asking questions and performing experiments to find things out and understand the world.

When pets go missing in Blue River Creek it is up to Ada to follow the scientific method by making a hypothesis, collecting data, and experimenting to find the missing animals.

"¿Por qué las rosas tienen pinchitos? ¿Por qué en la nariz hay tantos pelitos? Ada Magnífica tiene la cabeza llena de preguntas. Como sus compañeros de clase Pedro y Rosa, Ada siempre ha sentido una curiosidad insaciable. Pero cuando lleva demasiado lejos sus exploraciones y sus complicados experimentos científicos, sus padres se cansan y la mandan al rincón de pensar. ¿Tanto pensar le hará cambiar de opinión?"--Page 4 of cover.

Sent to explore a network of caves in India, Leah the biology expert and Cheng the geology expert soon discover there's more to this daring mission than meets the eye.

When thirteen-year-old Ellie's Grandpa Melvin, a world-renowned scientist in the body of a fourteen-year-old boy, comes for an extended visit, he teaches her that experimenting--and failing--is part of life.--

"Learn all about forest life, the amazing Venus flytrap, and the importance of conservation in the exciting eighth adventure with The Secret Explorers. This group of brilliant kids come together from all four corners of the globe to fix problems, solve mysteries and gather knowledge all over the planet -- and beyond. Whenever their help is needed, a special sign will appear on a door. They step through to the Exploration Station, and receive their...

Cece, a budding and inquisitive scientist, and her equally curious best friend Isaac conduct experiments to see whether Luna's dog Einstein will eat his vegetables.

Resolving to find the mother who left her behind, Sophie enlists the help of a charter pilot to visit a remote Pacific island lab only to encounter genetically enhanced humans created in a scientific experiment who all possess a terrible flaw.

For the first time in years Eerie Elementary is planning a science fair, which may not be a good idea in a school which is alive and out to get the students--but when Sam and his friends find a book of experiments that contains all of Orson Eerie's notes, it may turn out to be the key they need to finally understand the mad scientist.