Gregory Mone

Fourteen-year-old Kaya, of the undersea, high-tech world of Atlantis, and twelve-year-old Lewis, of the climate-threatened world above water, embark on a dangerous adventure when he enters her realm.

Bestselling author Gregory Mone brings Mattel's He-Man and the Masters of the Universe together for a brand-new adventure in the first book of this original middle-grade series based on the hit Netflix show! By the Power of Grayskull... I have the Power! A mysterious toxic gas is spreading across Eternia, ravaging farmlands and endangering citizens. The planet's only hope lies with Adam, a lost prince with cosmic abilities. When he wields...

Bestselling author Gregory Mone takes readers back to Atlantis in this action-packed sequel to Atlantis: The Accidental Invasion! Even an accidental invasion has dire consequences... After their daring escape from Atlantis, Lewis, Hanna, and Kaya, their resourceful Atlantean friend, find themselves pulled between two worlds. Trapped on the surface under the watchful eyes of government officials, the three adventurers receive an urgent call to return...

Lewis, Hanna, and Kaya, their resourceful Atlantean friend, embark on an all-new journey through Atlantis, from the sunken underwater world of Evenor to the tunnels below Ridge City. Bonus content includes science and robotics concepts in the story, and a scientist's take on the curious biology of mermaids.

In the tradition of Treasure Island, “The Duke's Curse” continues this thrilling middle-grade series following an unlikely young pirate on a high-stakes sea adventure, by New York Times bestselling author Gregory Mone. Young treasure hunter Fish-nicknamed for his swimming abilities, learns that his refusal to fight has a cost when he's torn away from his pirate family. Fish and his friends Nora and Daniel are forced to sail under Countess Marie...

Perfect for fans of Percy Jackson and Mr. Lemoncello's Library, Atlantis: The Accidental Invasion launches an exciting, action-packed new series about the underwater lost city Kaya, raised in the undersea, high-tech world of Atlantis, has always been fascinated by the legends about life above the water. Despite the government's insistence that they're only stories, she can't help but dream about the Sun People-and when a group of officials known as...

Jack, his genius siblings, and inventor Hank Witherspoon go to Hawaii and help technology billionaire Ashley Hawking find out who's sabotaging her revolutionary electric plant that harvests energy from the deep ocean. Includes facts about the deep ocean, the scientific process, and green power, as well as instructions for an experiment.

When Jack and his genius foster siblings, Ava and Matt, discover inventor Hank Witherspoon is missing, they travel deep into the Amazon jungle, overcoming strange creatures, a raging river, and some very clever foes to find their friend and protect his big idea.

America's most celebrated astrophysicist invites young readers to explore the mysteries of the universe.

"An exciting introduction to the true potential of AI from the director of MIT's Computer Science and Artificial Intelligence Laboratory. Imagine a technology capable of discovering new drugs in days instead of years, helping scientists map distant galaxies and decode the language of whales, and aiding the rest of us in mundane daily tasks, from drafting email responses to preparing dinner. Now consider that this same technology poses risks to our...