Jack and his younger sister take a trip in their tree house back to ancient Egypt, where they help a queen's mummy continue her voyage to the Next Life.

"Cynical twenty-three-year old August doesn't believe in much. She doesn't believe in psychics, or easily forged friendships, or finding the kind of love they make movies about. And she certainly doesn't believe her ragtag band of new roommates, her night shifts at a 24-hour pancake diner, or her daily subway commute full of electrical outages are going to change that. But then, there's Jane. Beautiful, impossible Jane. All hard edges with a soft...

"Biologist Domenica Ligrina fears her planet is dying. She might be right. An atomic disaster in Germany has contaminated Northern Europe with radioactivity. Economic and political calamities are destroying the whole planet. Human DNA is mutating, plant species are going extinct, and scientists are feverishly working on possible solutions. It becomes increasingly apparent that the key to future salvation lies in the past. In 2052 a secret research...

Two brothers escape the Black Death by skipping forward in time, experiencing six centuries of change in six days. December 1348. The country is in the grip of the Black Death. Brothers John and William are given an unexpected choice: either to go home and spend their last six days in their familiar world, or to search for salvation across the forthcoming centuries- living each one of their remaining days ninety-nine years after the last. They choose...

A collection of 16 time-travel stories by the science fiction master originally published 1956-2007, with a 2018 introduction by the author.

In 1967, four female scientists worked together to build the world's first time machine. But just as they are about to debut their creation, one of them suffers a breakdown, putting the whole project -- and future of time travel -- in jeopardy. To protect their invention, one member is exiled from the team -- erasing her contributions from history. Fifty years later, time travel is a big business. Twenty-something Ruby Rebello knows her beloved grandmother,...

Jason and his magic cat Gareth travel through time to visit countries all over the world during different periods of history.

After accidentally traveling back in time and rewriting the future, twelve-year-old best friends Rahim and Kasia must work together to restore their timeline. Seventh grader Rahim Reynolds loves testing out the gadgets invented by his brilliant friend Kasia Collins. First there were the X-ray glasses and all the trouble they caused. Now there's the new cell phone she built for his birthday, even though his parents won't let him have one. But Rahim...

The reader follows Waldo as he travels through different time periods in history and must try to find him in the illustrations of some of the crowded events in which he participates.

While cleaning out her reclusive grandfather's house, Joplin discovers pieces of a broken platter in a cookie tin. After having the platter repaired, Joplin wishes that she could both find a friend at school, and befriend the girl pictured in the platter. The next day, Joplin befriends a boy named Barrett, and also notices a girl outside her apartment. A girl who looks remarkably like the girl in the platter... The girl introduces herself as Sofie,...