By accidentally short-circuiting Professor Bullfinch's new crystalline material, Danny Dunn enables the professor to create a new machine that ma

"Under the light of a silvery moon, Bear wanders into people town and discovers a springy thing, a bouncy thing--a sit-on-it, jump-on-it thing! T

Once a month--every week in the summer--Steve the electrician dons special gear and, with the help of youngsters who live in his building, dives

"Hugo Sprouts is a fantastic tale about a boy frustrated with being small. Luckily, Hugo P. Sprouts is a mad scientist and determined to find a s

The longstanding and galaxy-spanning war between cats and robots escalates when each learns of inventions designed to extend their lives, and the

George and Harold, and their doubles, Yesterday George and Yesterday Harold, have a good thing going. Two of them go to school, while the other t

A twelve-year-old boy, worried that his parents may divorce, discovers that an island in the middle of the lake where he is spending the summer i

George and Harold and their doubles, Yesterday George and Yesterday Harold, have been taking turns going to school, but when the doubles fall pre

Neglected by her father who spends all of his time building a ghost machine to bring her mother back from the dead, twelve-year-old Emmaline deci

In 1852, when seventeen-year-old Katharine is sent to her family's estate to prove that her uncle is insane, she finds he is an inventor whose wo

Matt Cruse, a student at the Airship Academy, and Kate de Vries, a young heiress, team up with a gypsy and a daring captain, to find a long-lost

"With a plot combining science and the supernatural, four kids are caught up in a dangerous plan concocted by the eccentric inventor, Nikola Tesl