Armed with his knowledge of science, Leo Geo becomes an astronaut and heads into space, where he encounters pirates and tries to stop a comet that is headed toward his brother's science laboratory on Earth.

Armed with scientific knowledge and a magic dagger, Leo is determined to outwit man-eating Quadclops giants and Malvisors and travel to the center of the earth.

"A book of fun chemistry experiments has fallen into the wrong hands. Only Mel can use her knowledge of the periodic table to put an end to a maniacal madman's evil schemes. The periodic table helps us quickly understand the 118 elements, those tiny substances that make up everything in the world. By using the periodic table, we can recognize how these building blocks behave, find trends and patterns in the universe, and make predictions about elements...