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SCIENCE
Britain
Setting Up World's First National Stem Cell Bank - Embryo
stem cell research in Britain shifted into high gear Friday
when regulators granted the first licenses allowing scientists
to extract the cells from donated spare IVF embryos and
experiment with them. Several groups around the world have
already started research on embryonic stem cells - blank-slate
cells found in early stage embryos that go on to form every
type of specialized cell in the body - but Britain has the
most open laws governing the controversial area of research
and is widely tipped to lead the emerging field.
Gifted
Few Make Order Out of Chaos -
Some people have a special gift for predicting the twists
and turns of chaotic systems like the weather and perhaps
even financial markets, according to Australian psychologist
Richard Heath. Random sequences are by their nature unpredictable,
whereas chaotic sequences follow specific rules. Despite
this, chaotic sequences are very hard to predict in practice
because of the "butterfly effect" - even an unmeasurably
small change in initial conditions can have a dramatic impact
on their future state. Nonetheless, Heath found that a quarter
of the people he tested could predict the temperature for
at least the next two days if the sequence was chaotic,
rather than random, even though there is no obvious pattern
to the figures.
Study
Links DNA of Modern Humans, Neanderthals
- A new analysis of DNA evidence offers a surprising twist
on the popular "Out of Africa" theory of human
origins: Modern humans interbred with other populations
around the world for hundreds of thousands of years. Among
the study's implications: the genes of people today carry
vestiges of genes of Neanderthals and other extinct branches
of the human family. According to the original Out of Africa
theory, ancestors to today's human population migrated from
Africa 100,000 years ago, and they replaced less modern
populations in Europe and Asia. The new study by population
biologist Alan R. Templeton of Washington University in
St. Louis suggests instead that there were at least two
distinct migrations. The first wave occurred between 420,000
and 840,000 years ago, he said, and the second between 80,000
and 150,000 years ago.
A
Simple Grid of Molecular Nanowires Would 'Reinvent the Integrated
Circuit' - Another milestone on
the road to molecular electronics was recently reached by
researchers at Hewlett-Packard and the University of California,
Los Angeles. The researchers, who have received several
patents for their work, are proposing the use of a simple
grid of wires - each wire just a few atoms wide - connected
by electronic switches a single molecule thick. "This
is a technology that will really allow us to reinvent the
integrated circuit at a molecular level," said Phil
Kuekes, one of the inventors. "Molecular electronics
is focusing not just on the interesting properties of molecules,
but really attacking all of the problems of designing and
building integrated circuits." At the heart of the
research is the ability to form very thin, long nanowires
made of rare-earth metals such as erbium or dysprosium silicide
deposited by CVD on a silicon substrate. This ability came
as a surprise to the researchers, who initially were trying
to form rectangular islands.
Astronomers
Directly Observing Extra-Solar Planets
- Astronomers in the UK say that we could actually see a
planet around a nearby star within the next six months.
The astronomers plan to focus their search on white dwarfs
-- dimly glowing stars at the end of their lives. More than
80 planets outside our solar system have already been discovered,
but all of them were detected indirectly by observing the
subtle effect their gravity has on the motion of their parent
star. Since planets are so much fainter than stars, seeing
them directly is difficult.
Darwin's
Time Machine: Scientists Begin Predicting Evolution's Next
Step - Untangling the branches
of evolution's past is a daunting enough task for researchers,
but some scientists are now turning their eyes toward the
future in a bid to predict evolution's course. Barry G.
Hall, professor of biology at the University of Rochester,
has shown how a model of evolution developed in the lab
accurately reproduces natural evolution. The research, published
in the March issue of Genetics, demonstrates how the model
is so accurate that it can be used to predict how a strain
of bacteria will become resistant to antibiotics-giving
researchers a possible tool to create drugs to which bacteria
cannot adapt.
Oral
Treatment for Smallpox Unveiled
- A drug that can be given orally to fight smallpox has
been developed by US researchers. The drug is 100 times
more effective at slowing replication of the virus than
the existing candidate treatment, which must be injected.
It is also effective against other common viruses.
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TECHNOLOGY
Imitation
of Life - Machines that imitate
life, or automata, became popular as expensive playthings
during the 18th century. From glorified clocks they quickly
evolved into a procession of mechanical dancers, birds and
musical figurines of increasing complexity. Operating at
the intersection of science, commerce and entertainment,
they enabled ideas to flow freely between these fields and
spawned technologies and manufacturing techniques that later
helped to fuel the industrial revolution. The men who made
them, as Gaby Wood relates in "Living Dolls",
were driven by the desire to play God.
Sniffing
Chip is in the Wind - University
of Warwick engineering professor Julian Gardner told NewsFactor
the team is looking to create a chip that functions like
the nasal passages and olfactory sensors found in nature.
'The signal processing is based on the way the human olfactory
system works.' British engineers are working on a project
to produce the world's smallest electronic nose: a sensor-on-a-chip
that can sniff out anything from disease in humans and food
to the presence of land mines and air pollution. Researchers
at UK universities in Leicester, Warwick and Edinburgh say
the three-year project is aimed at creating a single, square
centimeter-sized silicon chip that can sense odors and chemicals
as well as process those signals -- much like the olfactory
systems of humans. University of Leicester professor and
research coordinator Tim Pearce told NewsFactor that the
"nose-on-a-chip" could be used to smell out land
mines, monitor air quality and emissions, aid in medical
diagnosis, and check foods and beverages.
NanoWalker:
There is a Robot in Your Pocket
- With dog-like or anthropomorphic robots, we've get used
to robots of "normal" or "human" size.
But amongst the numerous directions robotics research is
exploring, small-sized robots are maybe the most promising.
Small robots are light, easy to transport, and can go virtually
anywhere. And if they become "very" small, they
can even do much more. Like working on atoms - yes, atoms
- for instance. The NanoWalker project has been initiated
at MIT at the end of the 90s, at the BioInstrumentation
Laboratory. The goal: create "micromachines" that
could communicate, move autonomously, and perform task at
a very small scale, like moving cells or combining atoms.
Brain
Power - In a small lab at Brown
University in Providence, RI, a rhesus macaque sits in a
chair facing a computer screen, gripping the handle of a
device that looks a lot like a sailboat's tiller. For the
moment, the monkey uses this device as if it were a computer
joystick to control a simple video game: a colored dot appears
on the screen, and the animal moves the cursor to meet it.
Once the animal gets good at the task, though, the researchers
in the adjoining room will flip a switch and it will be
signals straight from the monkey's brain, not the joystick's
movements, that drive the cursor.
Scientist
Becomes World's First Cyborg -
Science fiction has just become reality. A cybernetics professor
has become the world's first cyborg - part human, part machine
- after a ground breaking operation to wire his nervous
system up to a computer. Professor Kevin Warwick believes
it opens up the possibility of a sci-fi world of cyborgs,
where the human brain can one day be upgraded with implants
for extra memory, intelligence or X-ray vision. The two-hour
operation was carried out by a team led by consultant neuro-surgeon
Peter Teddy under local anaesthetic at the Radcliffe Infirmary,
Oxford. Professor Warwick hopes that readings can now be
taken from an implant in his arm of electrical impulses
coursing through his nerves.
Miniature
Device Harnesses Energy Lost in Vibration
- If the prospect of replacing worn-out Walkman batteries
sounds annoying and time consuming, try doing it for a hundred
devices, each no bigger than a fingernail. The frustration
of this situation confronted researchers at the Berkeley
Wireless Research Center when they set out to create remote
sensor networks capable of monitoring everything from room
temperature to the structural integrity of airplane hulls.
"When deploying dense networks of nodes it is virtually
impossible to change the batteries in nodes," said
Berkeley Wireless Research Center project leader Rahul Shah,
"We need to have devices that are self-powered, and
are able to run for at least a few years without requiring
any kind of maintenance."
Neural
Network 'In-Jokes' Could Pass Secrets
- Artificial brains could use "in-jokes" to deliver
secret messages, according to computer scientists. The technique
relies on neural networks, computer systems designed to
mimic the brain. Just as the brain's nerve cells are wired
together in a complex mesh, neural nets consist of a web
of electrical switches, or a computer simulation of these
connections.
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BUSINESS
$500bn
Wasted on IT, Survey Says - Companies last year spent
$500bn more on computer technology than they needed to,
a hi-tech consultancy has calculated. According to research
and advisory firm Gartner, one-fifth of the more than $2.7
trillion spent annually on IT is wasted. Much of the wastage
relates to projects launched during the tech frenzy of the
late 1990s, many of which never came to fruition. Analysts
now say that firms have a more realistic notion of the value
of technology - something that bodes ill for any recovery
in the hi-tech sector.
Legal
Action 'Will Put Andersen to Death' Warrant
- Arthur Andersen warned that its future was in "grave
jeopardy" as the US justice department prepared to
bring criminal charges against it for destroying Enron documents.
In addition, it emerged that the shredding of Enron materials
also took place in the company's London office. The disposal
of documents being sought by prosecutors was originally
thought to be confined to the Houston office that managed
the relationship with the energy business.
Needed:
21st Century Accounting Rules
- As innovation and intellectual capital supplant factories
and equipment, corporate reporting needs to be broader,
deeper, and faster.
Fears
Over Rice Genome Access - Prominent
gene researchers fear that access to the complete DNA sequence
of rice, the world's most important food crop, will be restricted
when it is published in a scientific journal. The rice sequence
was completed by Syngenta and the Swiss company is expected
publish their work in April in Science. The journal will
publish a rice genome special issue on 5 April but will
not confirm if Syngenta's sequence will be part of it. But
20 of the world's leading scientists, including two Nobel
Prize winners, have signed a letter of complaint, fearing
"a very serious threat to genomics research".
Hanging
Hong Kong's Future On… Biotech?
- So with Hong Kong gradually losing its edge in traditional
areas, people in the former British colony are looking for
ideas about where the city should focus next. One solution
that some have come up with is to make Hong Kong a hub for
the biotech and life-sciences industries. In particular,
to focus on things like traditional Chinese medicine. After
all, biotech and life sciences seem to be up-and-coming
industries, and Hong Kong enjoys a unique position to take
advantage of greater interest in the herbal and other cures
that Chinese have been using for centuries. Local industry
advocates believe Hong Kong companies can help with research
into how to expand the uses of traditional Chinese medicine.
Napster
All Over Again? - The file-swapping
of recorded music on the Internet has already sent the music
industry into a spin. Now it is Hollywood's turn to take
fright. At its peak in February 2001, 2.8 billion music
files were downloaded each month through Napster alone.
The sharing of files containing pirated movies may still
be in its infancy, but 300,000-500,000 feature films are
already being downloaded daily, according to Viant, a consultancy.
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SOCIETY AND POLITICS
Targeted
Serendipity - More established than a cult and less
structured than a society, the international community of
Webloggers is -- like its chosen medium -- difficult to
define and even harder to miss. A hodgepodge of HTML programmers,
part-time philosophers, and linkaholics, this scattered
population shares one common penchant -- no, make that obsession.
The Weblog.
Bank
Shot - For most of its 50-odd
years of existence, the World Bank has been almost obsessively
thin-skinned: so much so that its public relations department
once tracked down a reporter's ex-wife in Africa in an effort
to discredit his article on the stretch-limousine lifestyle
of bank executives. On another occasion, it attempted to
halt production of a Monopoly-like board game called World
Bank. So imagine the teeth-gnashing as bank officials gathered
this week in Monterrey, Mexico, with 50-odd heads of state
and more than 300 finance ministers and other moneymen.
Just as bank President James D. Wolfensohn and his team
are lobbying for billions more to help them lift poor countries
from global poverty, a new book proclaims the bank's half-century
of such money-planting efforts a spectacular failure.
UN
Urgently Seeking Funds to Fight Nuclear Terrorism
- The International Atomic Energy Agency (IAEA) approved
Tuesday an action plan boosting anti-terrorist security
for nuclear power plants worldwide, but called urgently
for money to fund the initiative. Several countries have
already pledged contributions to the plan, launched after
the September 11 terror attacks, but not nearly as much
as the UN atomic watchdog needs, said IAEA Director General
Mohamed ElBaradei.
Leaders
Warn Terrorism Linked to Poverty
- Leaders of poor nations warned their rich counterparts
that if they want a world free of terrorism, they will need
to pay for it. Drawing a direct link between poverty and
violence, leaders at a UN summit said increased aid to the
world's neediest is more urgent than ever in the post-Sept.
11 world. The leaders at the UN International Conference
on Financing for Development, who have been discussing ways
to narrow the gap between the haves and the have-nots, warned
that the world's security depends on bringing relief to
the desperately poor.
Nuclear
Weapons Use No Longer Unthinkable
- In rhetoric and reality, countries around the world seem
to be creeping toward a new military philosophy that says
it is acceptable to use nuclear weapons on the battlefield
or to settle regional disputes. Everywhere, there are signs
that "the unthinkable" is being redefined to accommodate
new anxieties and advancing technology. U.S. President George
W. Bush and the British government have warned terrorists
with weapons of mass destruction that "all options"
are open for a military response.
The
Battle for Energy Dominance -
The American campaign against terrorism may be grabbing
the headlines, but another battle is being waged with perhaps
equally significant long-term implications: the contest
for energy dominance between the world's two largest oil
exporters, Saudi Arabia and Russia. This battle will have
fundamental consequences for the world's economy, U.S. energy
security, Russia's global role, the future relevance of
Saudi Arabia, and the clout of the Organization of Petroleum
Exporting Countries (OPEC).
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ENVIRONMENT
Mexico's
'Devastating' Forest Loss - Deforestation - which environmentalists
say is one of the most pressing concerns affecting the planet
- will top the agenda at a United Nations meeting of environment
ministers in New York on Monday. Mexico is one of the world's
worst affected countries. Depletion of forest cover is taking
place twice as fast than previously thought, with more than
one million hectares being lost each year.
Ireland's
New Green Tax is in the Bag -
The last free plastic bag has been handed out in Ireland.
From this morning shoppers will have to pay 15 cents (9p)
at supermarket checkouts and stores for each one used. The
plastic shopping bag levy - known in the republic as the
"plastax" - has been introduced to combat the
problem of discarded bags, which litter the countryside,
clog drains and add to the mountains of waste engulfing
the country's landfill sites. Ireland's environment minister,
Noel Dempsey, has led the campaign, condemning "our
insatiable use of free plastic bags". He is convinced
the levy will encourage shoppers to recycle bags. The average
Irish shopper uses 342 plastic bags a year, according to
a recent study.
Air
Pollution Linked to Lung Cancer
- In a study that offers some of the strongest evidence
to date of the health dangers of air pollution, researchers
have found that long-term exposure significantly raises
the risk of dying from lung cancer and is about as dangerous
as living with a smoker. The findings give new urgency to
efforts to clean up aging coal-fired power plants and enforce
regulations to limit emissions of soot, known scientifically
as fine particulate matter, some said.
El
Nino Awakens - Four years ago,
torrential rains battered the Southern US, mudslides struck
in Peru -- and the inhabitants of Canada's west coast saved
up to 30% on their winter heating bills. The cause? El Nino,
a huge temperature shift in the Pacific Ocean which spawns
climate changes globally. Today, using satellite Earth observation
data, scientists are detecting the early warning signs of
a new El Nino event and predicting that it will develop
over the next 3 to 6 months, bringing climate changes to
countries thousands of miles from the western Pacific, birthplace
of the event itself.
America's
Waterways Contaminated by Medications, Personal Care Products
- A government analysis shows the nation's waterways are
awash in traces of chemicals used in beauty aids, medications,
cleaners, and foods. Among the substances: caffeine, contraceptives,
painkillers, insect repellent, perfumes, and nicotine. Scientists
say the problem is that these substances largely escape
regulation and defy municipal wastewater treatment. And
the long-term effects of exposure are unclear, they say.
EU
Fishing Fleets Devastate Third World
- Over-fishing by foreign fleets, including those from Europe,
are causing alarming reductions in fish stocks off west
Africa and South America, putting local fishermen out of
business and removing valuable food resources, according
to the United Nations Environment Program (UNEP). The world's
poorest countries are selling off their fishing rights in
a series of agreements that are ruining their natural resources.
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THE FUTURE
Our
Posthuman Future (a review of Francis Fukuyama's latest
book) - Mr. Fukuyama made his name in 1989 with a brilliant
and controversial short book called "The End of History
and the Last Man". His argument was that, with the
end of the cold war, the dispute that had raged since industrialisation
and the French Revolution over the best form of political
economy was finished: democratic capitalism had won. With
saintly patience, Mr Fukuyama put up with wilful misunderstandings
of what he had meant, and soon turned to other large subjects.
In his latest work, "Our Posthuman Future"-the
title winks knowingly at that of his first book-he addresses
the looming threat, as he sees it, that biomedicine and
genetic science pose to humanity.
Technotopia
- We are increasingly barraged with disturbing high-tech
headlines: Medical team announces plan to clone humans;
Nano-robots learn to replicate themselves; US firms seek
patents on human genetic code; Research mice 'humanized'
with fetal organ transplants; MIT scientists attempt to
download human brain into computers; Up to 5 million children
on new generation of psychotropic medication. We are inundated
with stories about biotechnology, nanotechnology, advanced
computerization, artificial intelligence (AI), robotics,
cutting-edge pharmaceuticals, and myriad other "new"
technologies. Predictably, the media stories have corporations
and researchers heralding these new technologies as the
dawn of a coming utopia of health and wealth, and yes, perhaps
even immortality itself. The critics, however, warn of dire
risks to the environment and the rending of our social fabric.
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