What is a black hole? Where do they come from? How were they discovered? Can we visit one? Carolyn Cinami DeCristofano takes readers on a ride through the galaxies (ours, and others), answering these questions and many more about the phenomenon known as a black hole. In lively and often humorous text, the book starts off with a thorough explanation of gravity and the role it plays in the formation of black holes. Paintings by Michael Carroll, coupled...

Sixteen-year-old wizard-in-training Alex Taylor and his band of fellow adventurers battle a goblin army, navigate an enchanted forest, and try to solve the sphinx's riddle in their quest to find the lost Horn of Moran and return it to Alusia before the nation erupts in war.

When Buddy goes to school to become a therapy dog, he ends up helping figure out who pulled the fire alarm instead.

Twelve-year-old Nicholas and his ten-year-old, twin sisters, Hetty and Haley, spend the summer with their Great-Uncle Nick at Forsaken Lake, where he and their new friend Charlie investigate the truth about an accident involving their families many years before.

Buddy the dog discovers a strange, blue-tongued creature in the school library, and investigates what it is and how it got there.

Gruntly is a real hog, and the other animals are tired of his greediness, but when he gets mixed up on a treasure hunt and is the last to reach the prize, Gruntly begins to realize the value of kindness and sharing.

"The state fair is in town, and now Bink and Gollie-utter opposites and best friends extraordinaire-must use teamwork and their gray matter while navigating its many wonders. Will the energetic Bink win the world's largest donut in the Whack-a-Duck game? Will the artistic Gollie wow the crowd in the talent show? As the undaunted duo steps into the mysterious tent of fortune-teller Madame Prunely, one prediction is crystal clear: this unlikely pair...

"Teenage genius Artemis Fowl and his arch rival Opal battle to the last in this eighth and final book in series"--