science + technology news


March 6, 2007

Green tech, also known as clean tech, is Silicon Valley’s latest incarnation.

Some of the technologies involved are unproven but have immense promise. They inlude thin-film solar, higher-efficiency solar, cellulosic ethanol, algal biofuels, and fuel cells small enough to power mobile phones and large enough to light buildings.

The ‘new age’ of super materials

March 6, 2007

Levitating high-speed trains, super-efficient power generators and ultra-powerful supercomputers would become commonplace thanks to a new breed of materials known as high temperature superconductors (HTSC).

Cheap Nano Solar Cells

March 5, 2007

Researchers at University of Notre Dame have demonstrated a way to significantly improve the efficiency of solar cells by adding single-walled carbon nanotubes to a film made of titanium-dioxide nanoparticles.

The method doubles the efficiency of converting ultraviolet light into electrons when compared with the performance of the nanoparticles alone. The solar cells could be used to make hydrogen for fuel cells directly from water or for producing electricity.

Mars Melt Hints at Solar, Not Human, Cause for Warming, Scientist Says

March 5, 2007

Simultaneous warming on Earth and Mars suggests that our planet’s recent climate changes have a natural — and not a human-induced cause — according to one scientist’s controversial theory.

Darwin’s God

March 5, 2007

In the world of evolutionary biology, the question is not whether God exists but why we believe in him. Is belief a helpful adaptation or an evolutionary accident?

Nanorod coating makes least reflective material ever

March 5, 2007

Rensselaer Polytechnic Institute researchers have found that depositing an array of angled silicon-dioxide nanorods on a surface boosts the efficiency of silicon solar cells, by allowing them to absorb more light energy.

The coating could also reduce reflective losses in devices like LEDs and improve photographic lenses and mirrors that selectively reflect specific wavelengths.

How common viruses can turn cells cancerous

March 5, 2007

Cold Spring Harbor Laboratory researchers have found evidence for how certain viruses can trigger specific cancers.

During tumor development, the chromosomes of affected cells often become wildly rearranged. They found that cell fusion appears to be the cause.

Whole-Grain Cereals Reduce Heart Risks: Study

March 5, 2007

Eating whole-grain breakfast cereals seven or more times per week was associated with a lower (28 percent) risk of heart failure, according to an analysis of the observational Physicians’ Health Study.

Researchers presented findings of the study at the American Heart Association’s 47th Annual Conference on Cardiovascular Disease Epidemiology and Prevention. The study is supported by grants from the National Cancer Institute and the National Heart, Lung,… read more

What Will Life Be Like in the Year 2189?

March 5, 2007

A new fictional children’s book, “21st Century Kids” by Shannon Vyff (Warren Publishing, March 2007), explores the idea that two children, killed in a car accident, are cryonically preserved and reanimated in the year 2189.

Vyff’s own children were the inspiration for the main characters in the book and served as sounding boards. They are also featured along with Vyff in an upcoming Barbara Walter’s Special, “How… read more

Europe to unplug from common light bulbs

March 5, 2007

The world’s three largest light bulb makers said they will push European consumers to switch to energy-saving compact fluorescent lamp bulbs in a bid to cut carbon dioxide emissions.

CFLs are three times as efficient as traditional bulbs and last much longer. They estimated that if all inefficient traditional incandescent bulbs sold in Europe were to be replaced with more efficient bulbs, the continent would need 27 fewer power… read more

Microscope discerns atoms of different elements

March 5, 2007

The chemical identity of individual atoms on a surface can now be determined using an atomic force microscope.

Scientists can now look at a mixed material and pick out individual atoms of different elements. The advance will allow researchers to understand the structural make-up of complex materials and help them design new ones with unusual properties.

Virtual-Reality Video Game Helps Link Depression To Specific Brain Area

March 2, 2007

Scientists are using a virtual-reality, three-dimensional video game that challenges spatial memory as a new tool for assessing the link between depression and the hippocampus, the brain’s memory hub.

Push for open access to research

March 2, 2007

Five leading European research institutions have launched a petition that calls on the European Commission to establish a new policy that would require all government-funded research to be made available to the public shortly after publication, via the Internet.

University researchers typically have published their findings in expensive, peer-reviewed publications, which were purchased by those same publicly-funded universities.

The model certainly proved lucrative for large publishers, yet resulted… read more

To Be Almost Human Or Not To Be, That Is The Question

March 2, 2007

Researchers are developing robots that will assist the elderly and disabled, but the vote is split on how human-like they should become.

Podcast: Marvin Minsky On The Future Of Artificial Intelligence

March 1, 2007

In a Dr. Dobbs podcast, AI pioneer and MIT professor Marvin Minsky examines the failures of AI research and lays out directions for future developments in the field.

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