Robert A. Heinlein has written some of the bestselling science fiction novels of all time, including the beloved classic Stranger in a Strange Land. Now, in The Cat Who Walks through Walls, he creates his most compelling character ever: Dr. Richard Ames, ex-military man, sometime writer, and unfortunate victim of mistaken identity.

When a stranger attempting to deliver a cryptic message is shot dead at his dinner table, Ames is thrown headfirst

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Sixteen-year-old Finley Jayne and her "straynge band of mysfits" have journeyed from London to America to rescue their friend Jasper, hauled off by bounty hunters. But Jasper is in the clutches of a devious former friend demanding a trade ; the dangerous device Jasper stole from him for the life of the girl Jasper loves. One false move from Jasper and the strange clockwork collar around Mei's neck tightens. And tightens. From the rough streets of...

"Robots can help people clean, mow their lawns, learn new things, and more. Young readers meet the robots making every day easier and discover which tasks helper robots will tackle next"--

"The city of Ora is watching. Anima is an extrasensory human tasked with surveilling and protecting Ora's citizens via a complex living network called the Gleaming. Although ær world is restricted to what æ can see and experience through the Gleaming, Anima takes pride and comfort in keeping Ora safe from harm. When a mysterious outsider enters the city carrying a cabinet of curiosities from around with the world with a story attached to each item,...

The idea that human history is approaching a "singularity" -- that ordinary humans will someday be overtaken by artificially intelligent machines or cognitively enhanced biological intelligence, or both -- has moved from the realm of science fiction to serious debate. Some singularity theorists predict that if the field of artificial intelligence (AI) continues to develop at its current dizzying rate, the singularity could come about in the middle...

In the junkyard where they live, Scrap and the other slightly defective robot dogs find a surprising new owner.

In a future when deforestation and other environmental factors have caused many bird species to go extinct, businessman Alfred Wallis offers a catalog of parts for creating replacements, from hand-carved beaks to Italian-leather feet.

Eighteen-year-old Vivienne, lady-in-waiting to the future queen Guinevere, is secretly apprenticed to Merlin the magician and helps him try to create a steam-powered metal beast to defeat Morgan La Fey, King Arthur's sorceress sister, when she declares war on Camelot.

Emily is an artificial consciousness, designed in a lab to help humans process trauma, which is particularly helpful when the sun begins to die 5 billion years before scientists agreed it was supposed to. Her beloved human race is screwed, and so is Emily. That is, until she finds a potential answer buried deep in the human genome that may save them all. But not everyone is convinced Emily has the best solution--or the best intentions. Before her...