Technology Gizmo "Wikis", such as the online encyclopaedia Wikipedia, provide an easy way to post and maintain information. But vandals can all too easily deface them. So Andrew McNab at the University of Manchester, UK, has developed a form of wiki that uses digital certificates to identify writers. Once a user has been awarded a certificate, it … News
Penguins are not people THIS is getting out of hand. Or should I say, out of a flipper-like wing? Penguins are being lifted off their little waddling feet and held aloft as shining examples of how people should lead a decent life. Penguins may be models of upright social behaviour – in a biomechanical sense. But some members of … Opinion
Life Slimming for slackers IN A nondescript building on the medical campus of Washington University in St Louis, Missouri, among the parking lots blazing in the summer sun, lives a group of remarkable mice. Housed in miniature plastic bubbles, the mice lead a sterile existence separated from dirt and microbes by a double airlock that ensures that their food … Features
Physics The word: Rindler particles ALICE and Bob are having an argument. They are looking at the same space, but while Alice sees only emptiness Bob sees lots of particles. Alice whips out a thermometer which registers zero temperature, but Bob's registers heat from the motion of the particles. Who is right? They both are. If you've been thinking that … Regulars
Feedback Planetary man THE WORLD still waits, with bated breath, to know whether 2003 UB313, the object larger and farther away than Pluto whose discovery was revealed at the end of July, ends up as a planet or a mere Kuiper belt object, and what it will be called. Meanwhile, several colleagues have alerted us to … Regulars