science fiction

In an alternate Australia dominated by coal power and the British empire, Clara and Tim arrive in the rebel republic of Westralia, where people are nocturnal and live underground, burrowing with machines called steam moles.

In a world where everyone has an Alt -- an identical twin -- only one of the pair is allowed to live to adulthood. West Grayer has just received a notice to kill her Alt, and must carry out this task before her Alt eliminates her first.

Two New Zealand teenagers receive a desperate SOS from their future selves and set out on a quest to stop an impending ecological disaster that could mean the end of humanity.

Twelve-year-old Stephanie Harrington, a genetically-enhanced girl on the pioneer planet of Sphinx, bonds with a treecat, a telepathic and fully sentient animal, putting her in danger from highly placed enemies who want to ensure that the planet remains entirely in human hands.

Thirteen-year-old Doug relates in a series of blog posts the story of how he saved the world but was falsely branded a terrorist and murderer, forced to fight the evil Dr. Roach and his armored biodroid army with an electronics-destroying superpower of his own.

George is heartbroken when his neighbor Annie and her space-scientist father move to Florida, but when Annie sends him a secret message telling him she has been contacted by aliens with a terrible warning, he joins her in a galaxy-wide search for answers.

Callum's dads told him that a virus killed all females long ago. Then he is kidnapped by Outstationers and rescued by Bo, who claims to be a female. Callum and Bo trek across the continent seeking haven in the city of Vulture's Gate but discover greater danger there.

As alien spacecraft fill the sky and kill any human being who dares to go outside, fifteen-year-old Josh and twelve-year-old Megs, living in different cities, describe what could be their last days on Earth.

Retells the adventures of a French professor and his two companions as they sail above and below the world's oceans as prisoners on the fabulous electric submarine of the deranged Captain Nemo.

After Atherton's three-tiered world collapses, ending the geographical division of the social classes, Edgar, Samuel, and Isabel try to restore the flow of water and uncover the world's mysterious origins in the process.