|
The
Real King Kong!
Meditation,
Jupiter's Winds,
STEREO
Sun! Speeding Star!
Get Bioweapons
By Mail! |
| Gigantopithecus:
The Real King Kong! |

Gigantopithecus
blackii, the largest primate
that ever lived. (MU) |
McMaster University
News Release
Hamilton Ontario November 10, 2005 - A gigantic ape, measuring about 10
feet tall and weighing up to 1,200 pounds, co-existed alongside humans, a
geochronologist at McMaster University has discovered.
Using a high-precision absolute-dating method (techniques involving
electron spin resonance and uranium series), Jack Rink, associate
professor of geography and earth sciences at McMaster, has determined that
Gigantopithecus blackii, the largest primate that ever lived, roamed
southeast Asia for nearly a million years before the species died out
100,000 years ago. This was known as the Pleistocene period, by which time
humans had already existed for a million years.
"A missing piece of the puzzle has always focused on pin-pointing
when Gigantopithecus existed," explains Rink.
"This is a
primate that co-existed with humans at a time when humans were undergoing
a major evolutionary change. Guangxi province in southern China, where the
Gigantopithecus fossils were found, is the same region where some believe
the modern human race originated."
Research into Gigantopithecus blackii began in 1935, when the Dutch
paleontologist G.H. von Koenigswald discovered a yellowish molar among the
"dragon bones" for sale in a Hong Kong pharmacy. Traditional
Chinese medicine maintains that dragon bones, basically fossil bones and
teeth, possess curative powers when the fossils are ground into a fine
powder, and ingested.
For nearly 80 years, Gigantopithecus blackii has intrigued scientists, who
have pieced together a description using nothing more than a handful of
teeth and a set of jawbones.

Hollywood Kong
and friend Fay (RKO) |
"The size of
these specimens – the crown of the molar, for instance, measures about
an inch across – helped us understand the extraordinary size of the
primate," says Rink. Sample studies further revealed that
Gigantopithecus was an herbivore, feasting mainly on bamboo. Some believe
that the primate's voracious appetite for bamboo ultimately placed him at
the losing end of the evolutionary scale against his more nimble human
competition.
Rink's research was funded by Canada's Natural Sciences and Engineering
Research Council.
Rink's discovery coincides with an invitation to join the renowned New
York-based Explorers Club. Established in 1904, the Club's seven founding
members included two polar explorers, the curator of birds and mammals at
The American Museum of Natural History, an archaeologist, a war
correspondent and author, a professor of physics and an ethnologist. Sir
Edmund Hillary is Club's honorary chairman. Membership includes an
eclectic range of field scientists and explorers from more than 60
countries. Rink joins McMaster colleagues Hendrik Poinar (associate
professor, Anthropology) and Ed Reinhardt (associate professor, Geography
and Earth Science) who are also members.
Rink is currently in Thailand exploring an area where it is believed
Gigantopithecus also roamed. Rink returns to campus on November 19.
McMaster University, a world-renowned, research-intensive university,
fosters a culture of innovation, and a commitment to discovery and
learning in teaching, research and scholarship. Based in Hamilton, the
University has a student population of more than 23,000, and an alumni
population of more than 115,000 in 128 countries.
McMaster University - http://www.mcmaster.ca |
| Why
Bush Needs Samuel Alito! |

Photo: Reuters |
American Political
Science Association (APSA) News Release
Washington DC November 10, 2005 - Judicial review can revive the stalled
legislative agendas of the political majority. This finding challenges the
widely held assumption that judicial activism generally contradicts the
interest of elected officials.
It also provides insight into how, given the appointment of John Roberts
and nomination of Samuel Alito, a conservative-leaning Supreme Court could
help the Republican leadership achieve its political goals.
The research, conducted by political scientist Keith E. Whittington
(Princeton University), examines the conditions under which the U.S.
Supreme Court "assists powerful officials within the current
government in overcoming various structural barriers to realizing their
ideological objectives through direct political action."
Whittington's article appears in the November issue of the American
Political Science Review, a journal of the American Political Science
Association (APSA), and is available online at http://www.apsanet.org/imgtest/APSRNov05Whittington.pdf
"Structural characteristics of political systems such as the United
States encourage cooperation between judges and political leaders to
obtain common objectives," observes the author. Those characteristics
include federalism, entrenched interests, and fragmented political
coalitions and have encouraged support for judicial review by governing
political coalitions throughout U.S. history. Several such instances are
examined in the article:
States have been the principal target of the review power of the Supreme
Court, making federalism a crucial factor in generating national political
support for judicial review. The Court "largely built its power of
judicial review...by acting against the states," striking down state
and local policies over 1,100 times but federal policies only 150 times.
Entrenched interests across branches and within legislative chambers often
obstruct efforts to alter the status quo, preventing political leaders
from achieving their goals. Yet political leaders have pushed the Court to
enact constitutionally-based reform, as with the Kennedy administration
and the 1962 legislative apportionment decision of Baker v. Carr.
Fractious party coalitions undermine party unity, often leading to policy
compromises that political leaders may want to see undone through judicial
review. The 1895 invalidation of the federal income tax, strategies of the
1950s Democratic Party for dealing with racial civil rights, and the
rejection of the 1996 Communications Decency Act reflect this dynamic.
"Judicial review disrupts the policy status quo. The standard
assumption within...constitutional theory...assumes that the status quo
being disrupted reflects the policy preferences of [current political]
leaders," concludes Whittington. However, "over the course of
its history the U.S. Supreme Court has won political support by judicial
review not by acting against current governing coalitions but by working
within those coalitions."
Political support builds public backing and legitimacy for the Court. This
article suggests that the Court's authority may be at its peak when it is
working with elected leaders who seek to advance contested ideological
commitments while managing established but fractious coalitions. Given
today's divided Republican majority and the changing orientation of the
Supreme Court, this research provides valuable insight into the ability of
the Court to "interpose its friendly hand" and assist the GOP
leadership in achieving their goals.
The American Political Science Association (est. 1903) is the leading
professional organization for the study of political science and has
15,000 members in 80 countries. For more news and information about
political science research visit the APSA's media website - www.politicalsciencenews.org |
| Meditation
Really Changes Your Brain! |
 |
Massachusetts
General Hospital News Release
November 11, 2005 - The regular practice of meditation appears to produce
structural changes in areas of the brain associated with attention and
sensory processing. An imaging study led by Massachusetts General Hospital
(MGH) researchers showed that particular areas of the cerebral cortex, the
outer layer of the brain, were thicker in participants who were
experienced practitioners of a type of meditation commonly practiced in
the U.S. and other Western countries.
The article appears in the Nov. 15 issue of NeuroReport, and the research
also is being presented Nov. 14 at the Society for Neuroscience meeting in
Washington, DC.
"Our results suggest that meditation can produce experience-based
structural alterations in the brain," says Sara Lazar, PhD, of the
MGH Psychiatric Neuroimaging Research Program, the study's lead author.
"We also found evidence that mediation may slow down the
aging-related atrophy of certain areas of the brain."
Studies have shown that mediation can produce alterations in brain
activity, and meditation practitioners have described changes in mental
function that last long after actual meditation ceases, implying long-term
effects. However, those studies usually examined Buddhist monks who
practiced mediation as a central focus of their lives.
To investigate whether meditation as typically practiced in the U.S. could
change the brain's structure, the current study enrolled 20 practitioners
of Buddhist Insight meditation – which focuses on
"mindfulness," a specific, nonjudgmental awareness of
sensations, feelings and state of mind. They averaged nine years of
mediation experience and practiced about six hours per week. For
comparison, 15 people with no experience of meditation or yoga were
enrolled as controls.
Using standard MRI to produce detailed images of the structure of
participants' brains, the researchers found that regions involved in the
mental activities that characterize Insight meditation were thicker in the
meditators than in the controls, the first evidence that alterations in
brain structure may be associated with meditation.
They also found that, in an area associated with the integration of
emotional and cognitive processes, differences in cortical thickness were
more pronounced in older participants, suggesting that meditation could
reduce the thinning of the cortex that typically occurs with aging.
"The area where we see these differences is involved in both the
modulation of functions like heart rate and breathing and also the
integration of emotion with thought and reward-based decision making – a
central switchboard of the brain," says Lazar. An instructor in
Psychology at Harvard Medical School, she also stresses that the results
of such a small study need to be validated by larger, longer-term studies.
Massachusetts General Hospital - http://www.mgh.harvard.edu |
| Jupiter's
Winds |

NASA photo of
Jupiter |
University of
California - Los Angeles News Release
November 10, 2005 - A new computer model indicates Jupiter's massive winds
are generated from deep within the giant planet's interior, a UCLA
scientist and international colleagues report today in the journal Nature.
Jupiter's powerful winds are very different from those on Earth. They
continually circle the planet, and have changed very little in the 300
years that scientists have studied them. Massive east-west winds in
Jupiter's equatorial region reach approximately 340 miles per hour --
twice as rapid as winds generated by strong hurricanes on Earth.
At higher
latitudes, the wind pattern switches to alternating jets that race around
the planet.
No one has been able to explain why the winds are so constant or what
generates them -- but that may change.
"Our model suggests convection driven by deep internal heat sources
power Jupiter's surface winds," said Jonathan Aurnou, UCLA assistant
professor of planetary physics. "The model provides a possible answer
to why the winds are so stable for centuries. Jupiter's surface is the
tail; the dog is the hot interior of the planet.
"On Earth," Aurnou said, "we get strong changes in wind
patterns every season. On Jupiter, there is almost no variation. There are
changing cloud structures, but the large-scale winds remain essentially
constant."
The researchers identified key ingredients that explain Jupiter's
"super winds" and factored those into their model. Aurnou's
colleagues are Moritz Heimpel, assistant professor of physics at the
University of Alberta in Edmonton, and Johannes Wicht at the Max Planck
Institute for Solar System Research in Germany.
Aurnou, Heimpel and Wicht created the first three-dimensional computer
model that generates both a large eastward equatorial jet and smaller
alternating jets at higher latitudes. In a rapidly rotating shell of
fluid, they modeled thermally driven convection, which is what drives
motion in a boiling pot.
"Three critical ingredients are the correct geometry, turbulent
convection and rapid rotation, and our model contains all three
elements," said Aurnou, a faculty member in UCLA's Department of
Earth and Space Sciences. "When you include all those, that gives us
the right recipe. In the future, we'll refine our model by adding even
more ingredients."
Jupiter's radius is more than 11 times the radius of Earth. A tremendous
amount of heat comes from the interior.
"The heat from Jupiter's interior is comparable to the heat the
planet receives from the sun," Aurnou said. The model suggests
three-dimensional convection in Jupiter's deep atmosphere is likely
driving the zonal flows.
Jupiter's interior is made primarily of compressed hydrogen and helium,
and a giant plasma.
Aurnou will continue to study Jupiter's strong winds, as well as those on
Saturn, Uranus and Neptune.
University of California - Los Angeles - http://www.newsroom.ucla.edu |
| 50
Million Environmental Refugees By 2010! |
United
Nations University News Release
November 11, 2005 - Amid predictions that by 2010 the world will need to
cope with as many as 50 million people escaping the effects of creeping
environmental deterioration, United Nations University experts say the
international community urgently needs to define, recognize and extend
support to this new category of 'refugee'.
In a statement to mark the International Day for Disaster Reduction
(October 12), UNU's Institute for Environment and Human Security (UNU-EHS)
in Bonn says such problems as sea level rise, expanding deserts and
catastrophic weather-induced flooding have already contributed to large
permanent migrations and could eventually displace hundreds of millions.
Unlike victims of political upheaval or violence, however, who have access
through governments and international organizations to such assistance as
financial grants, food, tools, shelter, schools and clinics,
"environmental refugees" are not yet recognized in world
conventions.
UNU says the number of people forced to move by environment-related
conditions already approximates and may someday dwarf the number of
officially-recognized "persons of concern," recently calculated
at 19.2 million (footnote 1). Indeed, Red Cross research shows more people
are now displaced by environmental disasters than war.

New Orleans
residents flee the flood waters of Hurricane Katrina. |
"There are
well-founded fears that the number of people fleeing untenable
environmental conditions may grow exponentially as the world experiences
the effects of climate change and other phenomena," says UNU-EHS
Director Janos Bogardi. "This new category of 'refugee' needs to find
a place in international agreements. We need to better anticipate support
requirements, similar to those of people fleeing other unviable
situations."
Victims of sudden and highly-publicized catastrophes like the 2004 Asian
tsunami or the recent US Gulf Coast hurricanes benefit from the
mobilization of private and public sector generosity and humanitarian
relief. Countless millions of others around the world, however, are
uprooted by gradual environmental change, receive comparatively little
support to cope and adapt and are not recognized as 'refugees' with the
benefits that bestows.
"This is a highly complex issue, with global organizations already
overwhelmed by the demands of conventionally-recognized refugees, as
originally defined in 1951. We should prepare now, however, to define,
accept and accommodate this new breed of 'refugee' within international
frameworks," says UN Under Secretary-General Hans van Ginkel, Rector
of UNU.
Prof. van Ginkel stresses that environment-related 'refugees' must be
carefully defined and distinguished from economic migrants, who depart
voluntarily to find a better life but may return home without persecution.
Dr. Bogardi notes that the term "environmental refugee" rankles
many experts as simplistic, masking what are often compound motives behind
migration and implicitly laying the blame on nature when often the
policies and practices of people are the cause of displacement. UNU-EHS is
working to establish an internationally-agreed glossary of terms to
facilitate cooperation in the broad area of environment and human
security.
As well, most such displaced people today migrate within their own
country. There is therefore a major need for international agreement about
a nation's duty to protect and support internal migrants fleeing
catastrophic events or environmental degradation. That duty is implied in
the agreement produced by the World Conference on Disaster Reduction in
Kobe, Japan (Jan. 2005) and international guidelines on internal
displacement have been promoted. However, states' obligations need to be
formalized, says Dr. Bogardi.
The statement coincides with the announcement of a new chair on social
vulnerability at UNU-EHS, funded by a charitable foundation of the global
reinsurance company Munich Re. Among the areas of study will be migrations
forced by "slow moving catastrophes," says Dr. Bogardi,
including desertification, diminishing safe water supplies and climate
change-induced sea level rise.
Environment-related migration has been most acute in Sub-Saharan Africa,
but also affects millions of people in Asia and India. Meanwhile, Europe
and the United States are witnessing increasing pressure from victims of
often mismanaged and deteriorating soil and water conditions in North
Africa and Latin America.
And such migrations may grow dramatically in future.
Among many global problem sites, Sana'a, Yemen's capital, has doubled its
population on average every six years since 1972 and now stands at
900,000. The aquifer on which the city depends is falling by 6 meters a
year, and may be exhausted by 2010, according to the World Bank.
In China, the Gobi desert expands more than 10,000 square kilometers per
year, threatening many villages. Oxford-based expert Norman Myers says
Morocco, Tunisia and Libya each lose over 1,000 square kilometres of
productive land a year to desertification. In Egypt, half of irrigated
croplands suffer from salinization while in Turkey 160,000 square
kilometres of farmlands is affected by soil erosion.
Florida professor Tony Oliver-Smith is a UNU-EHS Munich Re Foundation
chair holder designate for 2007-08, whose work will include study of the
recent exodus from New Orleans and other environment-related migrations.
He notes that in the U.S. Louisiana now loses to the sea roughly 65 square
kilometers per year while in Alaska 213 communities are threatened by
tides that creep roughly 3 metres further inland each year.
Internationally, the low-lying Pacific island state of Tuvalu has struck
an agreement with New Zealand to accept its 11,600 citizens in the event
rising sea levels swamp the country. By one rough estimate, as many as 100
million people worldwide live in areas below sea level and / or are
subject to storm surge.
"Around the world vulnerability is on the increase due to the rapid
development of megacities in coastal areas," says Dr. Oliver-Smith.
"Many cities are overwhelmed, incapable of handling with any degree
of effectiveness the demands of a burgeoning number of people, many of
whom take up shelter in flimsy shanties.
"Combine this trend with rising sea levels and the growing number and
intensity of storms and it is the recipe for a disaster-in-waiting, with
enormous potential to create waves of environment-driven migration."
He says it is difficult today to discern "environmental
refugees" from economic migrants. In many cases a decision to move is
a function of a push to leave one disaster-affected location and the
economic pull of another, more promising location. American history offers
vivid examples: the 3 million people who fled the Dust Bowl of the 1930's
and the 700,000 mostly poor people who departed to northern states
following the Mississippi Delta flood of 1927. Their decisions in many
instances reflected a combination of pressures.
Other questions include determining the permanence of environment-related
dislocation – the difference between 'refugees' and evacuees.
"There is then the question of people forced to move involuntarily by
dams and other development processes. The World Bank estimates that in the
1990s some 100 million people were displaced by such projects. In some
countries, dams are poorly maintained and threaten communities. How should
people affected in these ways be characterized?"
"The questions that surround environment-related migration deserve
forethought and deliberation now as more difficult circumstances for
policy-makers almost certainly lie ahead," says UNU-EHS associate and
advisor Ben Wisner. "Much of humanity faces major threats with
enormous knock-on effects at the regional, national, and international
levels."
Dr. Wisner adds that it's important that initiatives to recognize and
relieve the plight of displaced people not let national governments
"off the hook for their failure to help prevent land degradation and
facilitate land restoration and, in some cases, for their collusion with
owners of forest companies, open mines, and large cattle ranches in
practices that degrade land."
[Note: UN High Commissioner for Refugees' 2004 "persons of
concern" include "refugees" (people who have fled
persecution in their own countries to seek safety in neighboring states,
9.2 million), civilians who have returned home but still need help,
civilians uprooted by violence but who remain within their own countries,
asylum seekers and stateless people.]
United Nations University - http://www.unu.edu |
| STEREO
Sun! |

Artist’s
concept of the twin STEREO observatories studying
the sun. (NASA) |
Johns Hopkins
University News Release
November 9, 2005 - The first spacecraft designed to capture 3-D
"stereo" views of the sun and solar wind were shipped today from
the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel,
Md., to NASA Goddard Space Flight Center (GSFC) in Greenbelt, Md., for
their next round of pre-launch tests.
The nearly identical twin STEREO (Solar TErrestrial RElations Observatory)
observatories, designed and built by APL, were recently tested in APL's
vibration lab where engineers used a large shake table to check the
structural integrity of the twin spacecraft. These tests simulate the ride
into space the observatories will encounter aboard a Delta II launch
vehicle from Cape Canaveral Air Force Station, Fla., where they're
scheduled for launch in spring 2006.
"Delivery of the twin observatories to NASA is a program
milestone," says Ed Reynolds, APL STEREO project manager.
"Building two nearly identical spacecraft simultaneously was a
technical and scheduling challenge, but one our team welcomed and tackled
with extreme professionalism and dedication. With the design, construction
and now delivery of the observatories to NASA Goddard, we're very excited
to help NASA get one step closer to launch and capturing the first-ever
3-D images of the sun."
During the next three months at NASA GSFC, the twin observatories will
undergo additional pre-launch checks including a series of spin tests to
check the spacecraft's balance and alignment; thermal vacuum tests to
duplicate the extreme temperature and airless conditions of space; and
acoustic tests that simulate the noise-induced vibrations of launch. The
mission team plans to transport the STEREO observatories to Florida in
March 2006 for final launch preparations.
Swinging into Orbit

Actual coronal
mass ejections on our sun (filtered), captured by NASA |
During the two-year
STEREO mission, two nearly identical space-based observatories will
explore the origin, evolution and interplanetary consequences of coronal
mass ejections. These powerful solar eruptions are a major source of the
magnetic disruptions on Earth and a key component of space weather, which
can greatly affect satellite operations, communications, power systems,
and the lives of humans in space.
To obtain unique "stereo" views of the sun, the twin STEREO
observatories must be placed into different orbits where they're offset
from each other and the Earth. One observatory will be placed ahead of
Earth in its orbit around the sun and the other behind. Just as the slight
offset between your eyes provides you with depth perception, this
placement will allow the STEREO observatories to obtain 3-D images and
particle measurements of the sun.
"This is the first time lunar swingbys will be used to place multiple
spacecraft into their respective orbits," says APL's Andy Driesman,
STEREO system engineer. "Mission designers at APL will use the moon's
gravity to redirect the observatories to their appropriate orbits around
the sun. This innovative mission design allows the use of a single launch
vehicle."
After launch, the observatories will fly in an orbit from a point close to
Earth to one that extends just beyond the moon. Approximately two months
later, mission operations personnel at APL will synchronize spacecraft
orbits, directing one observatory to its position trailing Earth in its
orbit. Approximately one month later, the second observatory will be
redirected to its position ahead of Earth.
STEREO is the third mission in NASA's Solar Terrestrial Probes Program.
STEREO is sponsored by NASA's Science Mission Directorate in Washington,
D.C. NASA GSFC's Solar Terrestrial Probes Program Office manages the
mission, instruments and science center. APL designed, built and will
operate the twin observatories for NASA during the mission.
Johns Hopkins University - http://www.jhu.edu
For more information about STEREO and to download images of the twin
observatories, visit http://www.stereo.jhuapl.edu
and click on "gallery" for images. |
| Speeding
Star HE 0437-5439 |

Artist's
conception of the star kicked out from
the Large Magellanic Cloud (ESO) |
European Southern
Observatory (ESO) News Release
November 9, 2005 - Using ESO’s Very Large Telescope, astronomers have
recorded a massive star moving at more than 2.6 million kilometres per
hour. Stars are not born with such large velocities. Its position in the
sky leads to the suggestion that the star was kicked out from the Large
Magellanic Cloud, providing indirect evidence for a massive black hole in
the Milky Way’s closest neighbour. These results will soon be published
in the Astrophysical Journal Letters.
"At such a speed, the star would go around the Earth in less than a
minute!", says Uli Heber, one of the scientists at the Dr.
Remeis-Sternwarte (University of Erlangen-Nürnberg, Germany) and the
Centre for Astrophysics Research (University of Hertfordshire, UK) who
conducted the study.
The hot massive star, (named HE 0437-5439), was discovered in the
framework of the Hamburg/ESO sky survey far out in the halo of the Milky
Way, towards the Doradus Constellation ("the Swordfish").
"This is a rather unusual place for such a star: massive stars are
ordinarily found in the disc of the Milky Way", explains Ralf
Napiwotzki, another member of the team. "Our data obtained with the
UVES instrument on the Very Large Telescope, at Paranal (Chile), confirm
the star to be rather young and to have a chemical composition similar to
our Sun."
The data also revealed the high speed of the star, solving the riddle of
its present location: the star did not form in the Milky Way halo, but
happens to be there while on its interstellar – or intergalactic –
travel.
"But when we calculated how long it would take for the star to travel
from the centre of our Galaxy to its present location, we found this to be
more than three times its age", says Heber. "Either the star is
older than it appears or it was born and accelerated elsewhere", he
adds.
As a matter of fact, HE0457-5439 lies closer to one of the Milky Way
satellite galaxies, the Large Magellanic Cloud, located 160,000
light-years away from us. The astronomers find it likely for the star to
have reached its present position had it been ejected from the centre of
the LMC. This could imply the existence of a massive black hole inside the
LMC, in order to have imparted the speeding star the necessary kick.
Another explanation would require the star to be the result of the merging
of two stars. In this case, the star could be older that presently
thought, giving it time to have travelled all the way from the Milky Way
Centre. This scenario, however, requires quite some fine-tuning. The
astronomers are now planning new observations to confirm one of the two
scenarios.
European Southern Observatory (ESO) - http://www.eso.org |
| Get
Bioweapons
By Mail! |

"Hey! Did
you remember to order the anthrax?" |
New Scientist News
Release
By Peter Aldhous
November 9, 2005 - You might think it would be difficult for a terrorist
to obtain genes from the smallpox virus, or a similarly vicious pathogen.
Well, it's not. Armed with a fake email address, a would-be bioterrorist
could probably order the building blocks of a deadly biological weapon
online, and receive them by post within weeks.
That's the sobering reality uncovered by a New Scientist investigation
into the bioterror risks posed by the booming business of gene synthesis.
Dozens of biotech firms now offer to synthesise complete genes from the
chemical components of DNA. Yet some are carrying out next to no checks on
what they are being asked to make, or by whom. It raises the frightening
prospect of terrorists mail-ordering genes for key bioweapon agents such
as smallpox, and using them to engineer new and deadly pathogens.
Customers typically submit sequences by email or via a form available on a
company's website. The companies then construct the specified genes and
mail them back a few weeks later, usually spliced into a bacterium such as
Escherichia coli. New Scientist approached 16 such firms, identified by a
Google search, to ask whether they screened orders for DNA sequences that
might pose a bioterror threat. Of the 12 companies that replied, just five
said they screen every sequence received. Four said they screen some
sequences, and three admitted not screening sequences at all.
The risks posed by gene synthesis first hit the headlines in 2002, when a
team from the State University of New York at Stony Brook made infectious
polioviruses from synthetic DNA. And just last month, researchers with the
US Centers for Disease Control and Prevention in Atlanta, Georgia, said
that they had used similar means to recreate the virus that caused the
1918 flu (New Scientist, 8 October, p 16).
In theory, a terrorist group could try to emulate the latter feat, or
create a virus such as Variola major, which causes smallpox. However, the
Variola genome comprises some 190,000 base pairs of DNA, and while some
companies will make sequences 20,000 or more base pairs long, an attempt
to order all the genes necessary to launch a smallpox attack would
probably arouse suspicion. "That would stand out from a technological
point of view," suggests Drew Endy, a bioengineer at the
Massachusetts Institute of Technology.
A more realistic risk is that terrorists could order genes thatfconfer
virulence to dangerous pathogens such as the Ebola virus, and engineer
them into another virus or bacterium. They could also order genes for a
hazardous bacterial toxin – although many of these are also available by
isolating the microorganisms from the environment.
Virulence genes are typically no more than a few thousand base-pairs long.
Their sequences are publicly available, so screening gene-synthesis orders
for potential bioweapons shouldn't pose a huge challenge. Indeed, a
company called Craic Computing,based in Seattle, has written opensource
software called Blackwatch that does just that. It is used by one of the
leading gene-synthesis companies, Blue Heron Biotechnology of Bothell,
Washington.
Robert Jones, president of Craic Computing, says that Blackwatch
"casts a wide net", comparing orders against sequences from
organisms identified by the US government as "select agents"
that raise bioterror concerns. But not all of these sequences are
dangerous, and some customers may have the clearance to work with those
that are. So even legitimate orders may be flagged up as suspicious, and
that means companies must employ biologists to carefully examine any
matches that crop up.
The need for expert human checks may be one factor deterring some
companies from screening orders. Others like to reassure customers who may
be worried about commercial confidentiality that their sequence data will
remain secret. But whatever the reasons, some firms freely admit that they
run no sequence screens. "That's not our business," says Bob
Xue, a director of Genemed Synthesis in South San Francisco.
Even if they don't routinely perform sequence checks, some companies say
that they do investigate their customers. But the scope of these checks
varies widely. But email addresses are notoriously easy to fake. And even
orders from legitimate institutions may not be what they seem. Alfred
Lasher, who manages Picoscript in Houston, Texas, says that he turned down
one order placed by an individual at a US biotech firm, after Picoscript's
enquiries revealed the gene was being ordered on behalf of a friend in
another country.
Experts are concerned that the checks currently employed by some companies
aren't sufficient to exclude orders placed by terrorists.
"We're taking this very seriously," says Endy.
Together with the J. Craig Venter Institute in Rockville, Maryland, and
the Center for Strategic and International Studies in Washington DC,
Endy's research group at MIT has launched a study into the risks and
benefits of synthetic genomics, and aims to produce a set of policy
recommendations by late 2006. The US National Science Advisory Board for
Biosecurity, set up last year to advise the US government on which
advances in biology could be exploited by terrorists, is also considering
the issue.
Some gene synthesis companies say they would welcome more detailed rules.
John Mulligan, president of Blue Heron, says it would be helpful to have a
list of "select sequences" that are off-limits for gene
synthesis without explicit government permission, rather than having to
make difficult judgments based on the list of select agents. "Tell us
what we can't make," he implores.

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But with gene
synthesis firms springing up all over the world, and the underlying
technology becoming cheaper and more widely available, it is unclear
whether regulations enacted in any one country will be enough.
"It's going to be virtually impossible to control," predicts
David Magnus, director of the Stanford Center for Biomedical Ethics in
Palo Alto, California. Endy argues that what's needed is better
self-regulation: if researchers only do business with companies that are
diligent in sequence screening and other security checks, then terrorists
would soon find themselves unable to place orders for dangerous genes.
Otherwise, he fears a crackdown that could close valuable avenues of
research.
For instance, gene synthesis can be used to make DNA vaccines, which may
eventually provide a means of responding rapidly to emerging diseases –
or bioterrorist attacks.
"As soon as people start dying from a bioengineered organism, there
will be a huge security response and research will be clamped down,"
warns Endy.
NEW SCIENTIST - http://www.newscientist.com |