If someone makes you feel stupid, that doesn't make you stupid, does it? Well, actually, it might, according to a two-year study on isolation and rejection conducted by social psychologist Roy F. Baumeister of Ohio's Case Western Reserve University, and two colleagues.
Within the next five years, sewage and other types of wet waste could produce enough energy to power cars, homes, and factories. A team headed by Ashok Bhattacharya, director of the process technology group at England's Warwick University, has developed a method of pulling hydrogen gas from sludge and other wet biomass-hydrogen that can be used in fuel cells. "The 'wet' is the innovation," he says. Dried wood pulp and other biodegradable stuff has been used to produce hydrogen for years. But according to Bhattacharya, wet biomass yields about twice as much of the gas.
Why does stress turn some people into lifelong boozers, while others can gut it out with no lasting harm? Researchers at Munich's Max Planck Institute of Psychiatry studied this question by testing mutant mice that couldn't handle stress well. The answer, they now say, may lie in our genes.
"Vogue!" bleats Madonna's voice, and three robotic dogs stare straight ahead, slowly lifting their front paws above their heads to the '90s hit. Perfectly in sync, they flip their paws inward and, yes, strike a pose. The dogs (which can be seen at www.aibopet.com) are Sony Aibos, and they learned to vogue courtesy of a passionate hacker and robotics hobbyist known only as Aibopet.
From fishing villages on the coast of the Arabian Sea to New Delhi slums teeming with people and poverty, children are learning the basics of computing—all by themselves. It's an experiment in what Sugata Mitra calls Minimally Invasive Education. "We often make the incorrect assumption that a teacher is required everywhere," says Mitra. If he's right, it could be a boon in India, where more than 40 percent of 6- to 14-year-olds (some 79 million kids) are unable to attend school.
Far too many of America's middle school science textbooks are just abominable. In recent years, some have featured maps that show the equator running through the southern United States, photos that don't match their captions, and misstatements of major laws of physics. Safety instructions for experiments (such as the use of protective glasses) are sometimes provided in the text but then ignored in accompanying illustrations. For decades, physicist John Hubisz of North Carolina State University in Raleigh has been campaigning to improve the texts, with little success.
Volkswagen's canoe-skinny mini could do New York to D.C. on 1 gallon of gas.
By John MatrasPosted 07.12.2002 at 1:03 pm 0 Comments
To listen to automakers snipe about tightening fuel economy standards, you'd think it impossible to squeeze more miles from a barrel of Extract of Arabia. This, of course, is not the case, particularly if you design a vehicle expressly to drive far and drink little.
Forget power, space, and speed: Volkswagen AG's latest idea-on-wheels does not address the requirements of the average American family driver. What it can do is travel more than 100 kilometers on a single liter of fuel. Translation: 235 miles per gallon.