"The essential universe, from our most celebrated and beloved astrophysicist. What is the nature of space and time? How do we fit within the universe? How does the universe fit within us? There's no better guide through these mind-expanding questions than acclaimed astrophysicist and best-selling author Neil deGrasse Tyson. But today, few of us have time to contemplate the cosmos. So Tyson brings the universe down to Earth succinctly and clearly,...

When eleven-year-old Olive and her distracted parents move into an old Victorian mansion, Olive finds herself ensnared in a dark plan involving some mysterious paintings, a trapped and angry nine-year-old boy, and three talking cats.

Meg Murry, her brother Charles, and their friend Calvin, embark on a journey through space and time, assisted by three otherworldly women, when they set out to find Meg's father, a physicist who disappeared while experimenting with time travel.

The magic tree house whisks Jack and Annie away to Australia where they must save some animals from a wildfire.

In this third book about Omri and his magic cupboard, Omri and his friend Patrick must risk grownups' discovering their secret when they find themselves in need of a friend's toy plastic doctors to save wounded people from the dangerous world of the Old West which the cupboard enables them to enter.

Faced with a dull summer in the city, Jane, Mark, Katharine, and Martha suddenly find themselves involved in a series of extraordinary adventures after Jane discovers an ordinary-looking coin that seems to grant wishes.

Three ancient scrolls beckon high school student Aidan Thomas to enter a realm of knights, kings, and unusual creatures, but he must rely on instinct and his latent athletic ability to deal with the terror, tempest, and treason offered by this new world.

Failing to eliminate life on Earth after their first attack, the Firstborn send a Q-bomb weapon to finish the job. Two cryogenically frozen females and a group of scientists studying the Eye, an artifact of the Firstborn, may be the only hope of finding a way to counter the onslaught.

Paragor unites with the Wyrm Lord and the Seven Sleepers to launch an assault on the kingdom of Alleble and its allies, who face the coming onslaught believing that they will be victorious with the help of the Three Witnesses.