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

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

While picking up milk for his children's cereal, a father is abducted by aliens and finds himself on a wild adventure through time and space.

Why do we remember the past and not the future? What does it mean for time to "flow"? Do we exist in time or does time exist in us? In lyric, accessible prose, Carlo Rovelli invites us to consider questions about the nature of time that continue to puzzle physicists and philosophers alike.-- Provided by publisher.

That clock can't be right. When Elise wakes up the morning after her birthday celebration, she's surprised to find herself in her bedroom. Last she can remember, she had fallen asleep next to her best friends at her slumber party in her basement, and it was October. But now she's alone, and her phone says it's April 8. Elise doesn't understand. How could she have woken up six months later? No one else is acting like anything strange has happened,...

"A tender, deeply wise novel of a young woman who doesn't feel at home on this earth, by the author of Parakeet"-- Provided by publisher.

As her mother prepares to be a contestant on the 1970s television game show, "The $20,000 Pyramid," a twelve-year-old New York City girl tries to make sense of a series of mysterious notes received from an anonymous source that seems to defy the laws of time and space.

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.

"An overworked book publicist with a perfectly planned future hits a snag when she falls in love with her temporary roommate...only to discover he lives seven years in the past, in this witty and wise new novel from the New York Times bestselling author of The Dead Romantics. Sometimes, the worst day of your life happens, and you have to figure out how to live after it. So Clementine forms a plan to keep her heart safe: work hard, find someone decent...

After Jason succeeds in finding a way back to Lyrian, he's immediately in more danger than ever. Meanwhile, Rachel and the others have made their own progress--as well as discovered new enemies. As the group ultimately rejoins, they strive to convince their most needed ally to join the war and form a rebellion strong enough to triumph against the emperor.