Technology Would-be rookies to face video gauntlet Written exams are so last century. Concerned that pen-and-paper tests do not offer a realistic assessment of how a soldier will perform in the unpredictable environment of a battlefield, the US army is developing virtual-reality aptitude tests for recruits. "It's about thinking on your feet," says developer Albert Rizzo at the University of Southern California's … News
Earth A licence to carry on polluting? Of all the schemes under discussion to stop or limit catastrophic climate change, one of those getting most attention is pollution trading. This popular but little-tried idea lies at the heart of some of the most prominent international approaches to the problem, including the Kyoto protocol and the European Union's Emissions Trading Scheme (EUETS). The … Opinion
Physics Understanding the swing of things PHYSICIST Al Sievers is playing with a simple chain of pendulums. In his laboratory at Cornell University in Ithaca, New York, he kicks the chain into action, and then watches a mystifying performance. Nudge one part of a system like this and the energy should gradually spread out, like ripples on a pond. However, Sievers's … Features
Scandinavian science: Which country comes out on top? FINLAND IN 1984, long before the Finnish cellphone company Nokia was a household name, the company's then chief executive Jorma Nieminen observed: "When an inventor in Silicon Valley opens his garage door to show off his latest idea, he has 50 per cent of the world market in front of him. When an inventor in … Careers
Feedback A whale of a saving MANY of Feedback's UK readers, it transpires, have their electricity supplied by Southern Electric – and,not being ones to miss a trick, they have been quick to email us about a claim in the company's recent customer service leaflet. Here, under the headline "Work wonders in a weekend", customers are … Regulars