science + technology news

Learning Retinal Implant System

January 15, 2006

Intelligent Medical Implants AG, a Switzerland-based company, announced that its first-generation Learning Retinal Implant System, containing a 50-electrode device, was successfully implanted in two patients in December 2005.

IMI’s Learning Retinal Implant System replaces the signal-processing functions of a healthy retina and provides input to the retinal nerve cells.

The System comprises three main components:

1. an implant, “The Retinal Stimulator”, which is surgically placed into the… read more

Taiwan breeds green-glowing pigs

January 13, 2006

Scientists in Taiwan say they have bred three pigs that glow in the dark.

The pigs are transgenic, created by adding genetic material from jellyfish into a normal pig embryo. The scientists will use the transgenic pigs to study human disease.

Because the pig’s genetic material is green, it is easy to spot. So if, for instance, some of its stem cells are injected into another animal, scientists… read more

St Lawrence of Google

January 13, 2006

Google is already working on a massive and global computing grid. Eventually, says Mr Saffo, “they’re trying to build the machine that will pass the Turing test,” in other words, an artificial intelligence that can pass as a human in written conversations. Wisely or not, Google wants to be a new sort of deus ex machina.

Spin Doctors Create Quantum Chip

January 13, 2006

University of Michigan scientists have created the first quantum microchip, using an ion trap to isolate individual charged atoms and manipulate their quantum states.

To isolate an ion, scientists confine it in the ion trap while applying electric fields. Laser light manipulates the spin of the ion’s free electron to flip it between quantum states.

The new chip, which is made of gallium arsenide, should be easily scaled… read more

Doomsday vault to avert world famine

January 13, 2006

A “doomsday vault” designed to hold around 2 million seeds, representing all known varieties of the world’s crops, is being built 1000 kilometers from the North Pole by the Norwegian government to safeguard the world’s food supply against nuclear war, climate change, terrorism, rising sea levels, earthquakes and the ensuing collapse of electricity supplies.

Nanoscale magnets promise more-shrinkable chips

January 13, 2006

University of Notre Dame researchers have produced an experimental universal logic gate, using nanomagnets, that could replace transistors.

Simulations show processing speeds of at least 100 megahertz should be possible using magnets 110 nanometers wide, with smaller ones expected to do much better.

Stem cell experts seek rabbit-human embryo

January 13, 2006

British scientists are seeking permission to create hybrid embryos in the lab by fusing human cells with rabbit eggs. If granted consent, the team will use the embryos to produce stem cells that carry genetic defects, in the hope that studying them will help understand the complex mechanisms behind incurable human diseases.

To make a hybrid embryo, a human skin cell would be taken from a person with motor… read more

Toward the Chips of Tomorrow

January 12, 2006

Sony, Toshiba, and IBM announced they will jointly develop the next generation of semiconductor technology, in the first public commitment to 32-nanometer technology.

In addition to fundamental chip design advances, the three partners are focusing on innovations applicable to a next generation of consumer-electronics products, including high-definition TV sets and portable video players.

Math Will Rock Your World

January 12, 2006

The mathematical modeling of humanity promises to be one of the great undertakings of the 21st century. It will grow in scope to include much of the physical world as mathematicians get their hands on new flows of data, from atmospheric sensors to the feeds from millions of security cameras. It’s a parallel world that’s taking shape, a laboratory for innovation and discovery composed of numbers, vectors, and algorithms.… read more

Live cells jetted with electric fields

January 12, 2006

A team of biophysicists in the UK has used a form of ink-jet printing to create “jets” of living cells for the first time.

Suwan Jayasinghe of University College London and colleagues at Kings College London say their technique, which does not destroy the cells, could be used to grow biological tissue or even human organs. The technique involves jetting biological cells from a needle at fields of up… read more

Vanishing Gas Confirms Black Hole Event Horizons

January 12, 2006
 Animation of a neutron star X-ray burst. (NASA)

A type of X-ray explosion found on neutron stars does not occur near black holes, scientists announced at the 207th meeting of the American Astronomical Society.

The lack of explosions is strong evidence for the existence of a black hole event horizon, a theoretical boundary into which matter vanishes and cannot escape.

“By looking at objects that pull in gas, we can infer whether that gas… read more

Dwarf galaxy found merging into the Milky Way

January 12, 2006

A huge but very faint structure, containing hundreds of thousands of stars spread over an area nearly 5,000 times the size of a full moon, has been discovered and mapped by astronomers of the Sloan Digital Sky Survey (SDSS-II).

At an estimated distance of 30,000 light years from Earth, the structure lies well within the confines of the Milky Way Galaxy. However, it does not follow any of Milky… read more

Researchers Discover New Way to Stimulate Brain to Release Antioxidants

January 12, 2006

Burnham Institute Resesarchers and a team from Japan have discovered a novel way to treat stroke and neurodegenerative disorders by inducing nerve cells in the brain and the spine to release natural antioxidants, such as bilirubin, that protect nerve cells from stress and free radicals that lead to neurodegenerative diseases.

In stroke and various neurodegenerative disorders, such as Alzheimer’s disease and Lou Gehrig’s disease, glutamate, an amino acid found… read more

New Doubts Are Cast on Einstein’s Cosmological Constant

January 12, 2006

Astronomer Bradley E. Schaefer said that a new analysis of cosmic history based on gamma ray burst data casts doubts on Einstein’s cosmological constant, the leading explanation for the mysterious force that appears to be pushing apart the universe.

E-Weapons: Directed Energy Warfare In The 21st Century

January 12, 2006

A new breed of weaponry, “directed-energy weapons,” may well signal a revolution in military hardware — perhaps more so than the atomic bomb.

Directed-energy weapons take the form of lasers, high-powered microwaves, and particle beams, according to J. Douglas Beason, author of the recently published book: The E-Bomb: How America’s New Directed Energy Weapons Will Change the Way Wars Will Be Fought in the Future,

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