735,951 articles


MONDAY 1. OCTOBER 2007


Beyond a 'speed limit' on mutations, species risk extinction

Harvard University scientists have identified a virtual "speed limit" on the rate of molecular evolution in organisms, and the magic number appears to be 6 mutations per genome per generation -- a level beyond which species run the strong risk of extinction as their genomes lose stability.

Census of protein architectures offers new view of history of life

The present can tell you a lot about the past, but you need to know where to look. A new study appearing this month in Genome Research reveals that protein architectures - the three-dimensional structures of specific regions within proteins - provide an extraordinary window on the history of life.

Genes influence people's economic choices

An international team of researchers including an MIT graduate student has demonstrated for the first time that genes exert influence on people's behavior in a very common experimental economic game.

How 'Mother of Thousands' Makes Plantlets

New research shows how the houseplant "mother of thousands" (Kalanchoe diagremontiana) makes the tiny plantlets that drop from the edges of its leaves. Having lost the ability to make viable seeds, the plant has shifted some of the processes that make seeds to the leaves, said Neelima Sinha, professor of plant biology at UC Davis.

Lunar Outpost Plans Taking Shape

NASA's blueprints for an outpost on the moon are shaping up. The agency's Lunar Architecture Team has been hard at work, looking at concepts for habitation, rovers, and space suits.

Palm Swings to 1Q Loss

(AP) -- Struggling Treo smart phone maker Palm Inc. swung to a small loss Monday for its fiscal first quarter as it faced stiffening competition.

Physicists Tackle Knotty Puzzle

Electrical cables, garden hoses and strands of holiday lights seem to get themselves hopelessly tangled with no help at all. Now research initiated by an undergraduate student at the University of California, San Diego has resulted in the first model of how knots form.

Researchers explain cell response to skin-damaging UV rays

It`s well known that overexposure to ultraviolet rays from the sun can cause major skin problems, ranging from skin cancer to sunburns and premature wrinkles. A tan, for example, is nature`s own UV protection and an unhealthy sign that your skin is damaged.

Shuttle Discovery at Launch Pad

With space shuttle Discovery now at its launch pad at NASA's Kennedy Space Center, the next major milestone for the upcoming STS-120 mission is a full launch dress rehearsal.

Simple Data Transfer at Home with Powerline

Siemens is now offering a Powerline adapter for fast transmission of DSL data around the home. The Gigaset HomePlug AV 200 makes setting up a home network a simple task, even for adults without any technical knowledge.

Software 'Chipper' Speeds Debugging

Computer scientists at UC Davis have developed a technique to speed up program debugging by automatically "chipping" the software into smaller pieces so that bugs can be isolated more easily.