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Archive for September 3rd, 2006|Daily archive page

Down Syndrome births drop in state

In Uncategorized on September 3, 2006 at 10:19 pm

Sunday, 09/03/06

Decline suggests abortions up in wake of better tests


Amid new testing procedures during pregnancy, the percentage of babies born with Down syndrome has plummeted nationwide since the late 1980s, researchers have found.

The trend — which is less pronounced in Tennessee than elsewhere — suggests to some researchers that more women are opting to terminate Down syndrome pregnancies, raising alarm among some ethicists and disability rights advocates.

Tennessean.comLink to Source

Big Wheels for Little Cars

In nano on September 3, 2006 at 9:15 pm

Chemists build the world’s smallest auto dealership, molecule by molecule. No toy models, these cars actually drive. The most prolific car manufacturer on the planet resides in a Rice University laboratory in Houston, where chemist James Tour and his colleagues have built one trillion trillion nanoscopic cars. The tiny four-wheeled vehicles are only four billionths of a meter wide—25,000 of them parked side by side would be about as thick as a piece of paper. Not just another nano-gimmick, Tour’s cars could one day carve tiny channels in silicon, creating more-powerful computer chips.

Although other groups have made nanocars that slip or slide across a surface, Tour’s team is the first to construct ones with actual rolling wheels. To get the cars moving, scientists either heat an atomically smooth gold roadway (the temperature difference incites the wheels to spin) or use a scanning tunneling microscope to emit a beam of electrons that drags the car along by static electricity. In the future, Tour hopes to install an active propulsion system. “What we want to do now is put an internal motor in there and drive the thing,” he says.

Several different motors are in the works, including a photon-powered version [see illustration below]. Tour is also fine-tuning new 2006 models, including a nanotruck capable of transporting molecules, such as oxygen. Before long, he says, “we’ll have a little Daytona 500.”
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Nanowater

In nano on September 3, 2006 at 6:24 pm

Hi everybody,
my next column is available. It includes nno stuff and the issue of disabled people and water and sanitation
Click here

history of and future columns here
Any comments welcome
Cheers
Gregor

Atlas of Poverty

In Uncategorized on September 3, 2006 at 6:20 pm

Where the Poor Are: An Atlas of Poverty brings together a diverse collection of maps from different continents and countries, depicting small area estimates of vital development indicators at unprecedented levels of spatial detail.

The atlas is a product of the CIESIN Global Poverty Mapping Project, begun in 2004, which was made possible by support from the Japan Policy and Human Resource Development Fund, in collaboration with The World Bank. The atlas of 21 full-page poverty maps reveals possible causal patterns and provides practical examples of how the data and tools have been used, and may be used, in applied decisions and poverty interventions.

Link to the original Source

Global water crisis looms larger

In Uncategorized on September 3, 2006 at 6:08 pm
  • 13:00 21 August 2006
  • NewScientist.com news service
  • Andy Coghlan
  • One-third of the world’s population is short of water – a situation we were not predicted to arrive at until 2025 – according to a disturbing new report on the state of the world’s water supplies. Squeezing more out of every raindrop that falls on poverty-stricken regions of Africa and Asia is key to the survival of the world’s poorest and most malnourished people, researchers say. The report by the International Water Management Institute in Colombo, Sri Lanka, was released on Monday in Stockholm at the start of World Water Week. It paints a bleak picture of global access to fresh water and warns that the world cannot carry on complacently using water as if it will never run out. “Business as usual is not an option,” says David Molden of the institute, and coordinator of the report, called Insights from the Comprehensive Assessment of Water Management in Agriculture. It concludes that one-third of the world’s population now suffers water scarcity, a situation that has materialised 20 years sooner than predicted by an assessment five years ago.

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Health experts: Obesity pandemic looms

In Health on September 3, 2006 at 5:40 pm

Yahoo news By ROHAN SULLIVAN, Associated Press Writer
The World Health Organization says more than 1 billion adults are overweight and 300 million of them are obese, putting them at much higher risk of diabetes, heart problems, high blood pressure, stroke and some forms of cancer. World Health Organization says more than 1 billion adults are overweight and 300 million of them are obese, putting them at much higher risk of diabetes, heart problems, high blood pressure, stroke and some forms of cancer.

Zimmet, a diabetes expert at Australia’s Monash University, said there are now more overweight people in the world than the undernourished, who number about 600 million.
Link to Source

Some university-based nano labs around the world

In nano on September 3, 2006 at 12:35 am

Center for Nano Science and Technology at Notre Dame University lists over 100 weblinks to university-based labs around the world.
Link to Source