science + technology news

Crops ‘widely contaminated’ by genetically modified DNA

February 26, 2004

Scientists are warning of a potentially “serious risk to human health” after the discovery that traditional varieties of major American food crops are widely contaminated by DNA sequences from GM crops.

In trials, crops have been genetically engineered to manufacture proteins for healing wounds and treating conditions such as cystic fibrosis, cirrhosis of the liver and anemia; antibodies to fight cancer and vaccines against rabies, cholera and foot-and-mouth disease.… read more

Doubt cast on free radical theory

February 26, 2004

Research by University College London, published in Nature, contradicts the theory that molecules called free radicals, produced when the body fights infection, are a contributory factor in a wide range of diseases.

The researchers discovered that it is not free radicals that give white blood cells their destructive power against foreign invaders, but enzymes. When these were blocked, the cells were unable to kill off foreign invaders.

This,… read more

The Complete Guide to Googlemania!

February 25, 2004

They named their new search engine Google, for the biggest number they could imagine. But it wasn’t big enough. Today Google’s a library, an almanac, a settler of bets. It’s a parlor game, a dating service, a shopping mall. It’s a Microsoft rival. It’s a verb. At more than 200 million requests a day, it is, by far, the world’s biggest search engine. And now, on the eve of a… read more

Researchers Successfully Force Evolutionary Leap

February 25, 2004

Researchers at the University of Texas at Austin and the University of Michigan have forced an unprecedented evolutionary leap in E. coli bacteria, and findings from their study could have ramifications on protein production for the biotechnology industry.

The development, reported in the Feb. 20 issue of Science, demonstrated how the bacterium created an entirely new way to make disulfide bonds. These bonds compose a protein’s stiffening struts that… read more

Planetary Defense: Planning with Phantom Asteroids

February 25, 2004

Authorities in defending the Earth from a cosmic run-in with an asteroid or comet are meeting to detail ways to thwart future impacts and deal with the calamity if our planet is struck.

Researchers discover way to grow silicon nanowires

February 24, 2004

Oregon Health & Science University researchers have discovered a new way to accurately grow silicon nanowires on an electrode for use in fabricating nanoscale electronic devices.

Silicon nanowires are typically between 5 and 20 nanometers in diameter. They are grown in a quartz reactor using a technique developed decades ago by Bell Labs called vapor-liquid-solid deposition. “The addition of the electrical fields is what’s new,” said Raj Solanki, Ph.D.,… read more

U.S. Still Mining Terror Data

February 24, 2004

The government is still financing research to create powerful tools that could mine millions of public and private records for information about terrorists despite an uproar last year over fears it might ensnare innocent Americans.

Some of the projects from DARPA’s Total Information Awareness effort were transferred to U.S. intelligence offices; others went to a $64 million research program run by a little-known office called the Advanced Research and… read more

World Awaits More GM Crops as Safety Debate Rages

February 24, 2004

The global sowing of genetically modified (GM) crops will continue rising in the next few years, gaining more of a foothold in the world’s food supply, but millions still need convincing that the food is safe to eat.

Worse Than Gray Goo

February 24, 2004

“If we ever get to the point where script kiddies can release dangerous gray goo, we’re probably doomed –since it’ll surely be harder to stop goo than to stop slow-moving, slow-thinking meat robots from pushing the wrong buttons, says Center for Responsible Nanotechnology Director of Research Chris Phoenix.

“But we will have much more severe dangers to deal with before that point. Like nano-arms races with weapons much more… read more

US military creates second Earth

February 24, 2004

The US Army is building a second version of Earth on computer to help it prepare for conflicts around the world.

The project aims to help the US Army plan future conflicts. The software Earth is being created for the US Army by gaming company There. It is planning to model the entire planet at a scale that would make it possible to walk across the United States if… read more

Real pain dulled in virtual worlds

February 24, 2004

Fantasy worlds created by virtual reality have been shown to provide a novel form of relief to patients suffering from intractable pain.

Dr Hunter Hoffman, research fellow at the Harborview Medical Center in Seattle, has tested his virtual worlds on victims of burns injuries who suffer excruciating pain during their daily dressing changes which conventional drug therapy fails to control.

Virtual analgesia is founded on the principle of… read more

Big Bang to be plumbed by supercomputer

February 24, 2004

IBM’ s Blue Gene/L supercomputer will support a radio astronomy attempt to view the earliest epoch of the universe 13 billion years ago, possibly the first stars and the first fragments of galaxies to emerge after the Big Bang.

The system will be used by Astron, an astronomy organization in the Netherlands. The signal-processing algorithm will require the computer to crunch around 700 Gbits of data per second from… read more

New insights about brain organization

February 23, 2004

New evidence from rat studies suggests that theories about how the brain processes sight, sound and touch may need updating.

Researchers found that while large regions are overwhelmingly devoted to processing information from a single sense, in the borders between them, cells can share information from both senses.

“This represents a new view of how the brain is organized,” said Mark Wallace, an associate professor of neurobiology and… read more

Hey, Gang, Let’s Make Our Own Supercomputer

February 23, 2004

Building on the concept of flash mobs, the sudden Internet-organized gatherings, a lecturer has arranged for 1200 students to assemble the first “flash mob supercomputer” in the school gym from their home PCs.

New Data on 2 Doomsday Ideas, Big Rip vs. Big Crunch

February 23, 2004

A dark unseen energy is steadily pushing the universe apart, just as Einstein predicted, suggesting the universe may have a more peaceful end than recent theories envision, according to striking new measurements of distant exploding stars by the orbiting Hubble Space Telescope.

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