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Spaceships powered primarily by water could open up the solar system to exploration, making flights to Mars and other far-flung locales far cheaper, a recent study has found. A journey to Mars and back in a water-fueled vehicle could cost as little as one space shuttle launch costs today, researchers said. And the idea is to keep these "space coaches" in orbit between trips, so their relative value would grow over time, as the vehicles reduce the need for expensive one-off missions that launch from Earth. The water-powered space coach is just a concept at the moment, but it could...

The Last Question by Isaac Asimov © 1956 The last question was asked for the first time, half in jest, on May 21, 2061, at a time when humanity first stepped into the light. The question came about as a result of a five dollar bet over highballs, and it happened this way: Alexander Adell and Bertram Lupov were two of the faithful attendants of Multivac. As well as any human beings could, they knew what lay behind the cold, clicking, flashing face -- miles and miles of face -- of that giant computer. They had at least a vague...

Are we safe from robots that can think for themselves? By REBECCA CAMBER Robots that can think for themselves could soon be caring for our children and the elderly and policing our streets, say experts. Scientists told yesterday of a new generation of robots which can work without human direction. They predict that in the next five years robots will be available for child-minding, to work in care homes, monitor prisons and help police trace criminals. And while it may sound like something out of a science-fiction film, the experts say advances in technology have made the thinking robot possible....

A new set of laws has been proposed to govern operations by killer robots. The ideas were floated by John S Canning, an engineer at the Naval Surface Warfare Centre, Dahlgren Division – an American weapons-research and test establishment. Mr Canning's “Concept of Operations for Armed Autonomous Systems” presentation can be downloaded here (pdf). Many Reg readers will be familiar with the old-school Asimov Laws of Robotics, but these are clearly unsuitable for war robots – too restrictive. However, the new Canning Laws are certainly not a carte blanche for homicidal droids to obliterate fleshies without limit; au contraire Canning...

IN 1981 Kenji Urada, a 37-year-old Japanese factory worker, climbed over a safety fence at a Kawasaki plant to carry out some maintenance work on a robot. In his haste, he failed to switch the robot off properly. Unable to sense him, the robot's powerful hydraulic arm kept on working and accidentally pushed the engineer into a grinding machine. His death made Urada the first recorded victim to die at the hands of a robot. This gruesome industrial accident would not have happened in a world in which robot behaviour was governed by the Three Laws of Robotics drawn up...

Take this Isaac Asimov's Super Quiz to a Ph.D. Score 1 point for each correct answer on the Freshman Level, 2 points on the Graduate Level and 3 points on the Ph.D. Level.

Isaac Asimov was the steak-and-buffet restaurant of American authors: What he lacked in quality, he made up for in volume. If you didn't like what he was serving, you could wait a few minutes for him to bring out something else. By the time he died in 1992, at the age of 72, Asimov had published more than 470 books, ranging from science-fiction classics to annotated guides of great literature to limerick collections to The Sensuous Dirty Old Man, a defense and celebration of lechery. "His first 100 books took him 237 months, or almost 20 years, until October 1969,...