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After the Transistor, a Leap Into the Microcosm

September 1, 2009

Silicon nanowires (IBM)

As scaling down the transistor approaches fundamental physical limits, researchers at IBM and Intel are developing new materials and fabrication techniques, including FinFET (transistors tipped vertically for greater density and insulation), nanowires, and DNA origami (for precision nanowire scaffolding).

Afternoon naps may boost heart health

February 13, 2007

A study of nearly 24,000 people found that those who regularly took midday naps were nearly 40 percent less likely to die from heart disease than non-nappers.

Researchers suggest that siestas might protect the heart by lowering levels of stress hormones.

Age-related memory deficits linked to disruption of hippocampal microcircuits

May 16, 2011

A classification task involving marking images of items as “new,” “old,” or “similar” to a prior set of images helps explain how and why older people have difficulty forming new memories and distinguishing similar objects from one another, Michael Yassa and his team at Johns Hopkins’ Krieger School of Arts and Sciences found.

Using MRI, Yassa observed how the brains of college students are more likely… read more

Ageing mechanism linked to X-chromosome

February 16, 2004

University of Leuven scientists narrowed the search for a gene linked to aging on Friday and said it is probably located on the X chromosome, implying that longevity may be a trait inherited from the mother.

The research was based on measurements of the telomere length of white blood cell DNA (elderly people with longer telomeres live five to six years longer than people with shorter ones).

If… read more

Agency signs on digital star Lara Croft

May 21, 2002

Beverly Hills talent agency Creative Artists Agency announced they will represent digitally animated Lara Croft for new products and promotional tie-ins.The Lara Croft character has been featured in six video games and the “Tomb Raider” movie. Eidos plans to release the new “Lara Croft: The Angel of Darkness” video game this coming winter.

Agenda Set For Upcoming Planetary Defense Conference

February 26, 2007

The second Planetary Defense Conference will bring together scientists and engineers from the international space community on March 5 – 8 in Washington DC to assess our ability to discover and track near-Earth objects and deflect an asteroid or comet that poses a threat to Earth.

Agent-based computer models could anticipate future economic crisis

November 26, 2008

Researchers at the U.S. Department of Energy’s Argonne National Laboratory are trying to create new economic models that will provide policymakers with more realistic pictures of different types of markets so they can better avert future economic catastrophe.

They have created a new set of simulations called “agent-based models” to better anticipate how markets behave. These new models rely on information gleaned in part from surveys that ask respondents… read more

Agents of Change

September 7, 2004

Autonomous agents are still in the labs but could eventually play a critical role in areas ranging from setting market prices to creating more resilient networks.

Autonomous agents have the potential to become an extraordinarily powerful technology, with the capacity to learn, experiment and act independent of human control. Agents could ultimately improve productivity, increase software reliability and change the operation of markets, particularly supply chains.

Aggregators Attack Info Overload

August 19, 2003

A new breed of software, called newsreaders or aggregators, is helping manage information overload by allowing users to subscribe to feeds from diverse news sources and blogs.

‘Aggressive but safe’ SUV wins robotic street race

November 5, 2007

“Boss,” a vehicle developed at Carnegie Mellon University, was declared the winner of a $2 million prize in DARPA’s urban robot car race on Sunday.

It travelled autonomously through traffic for six hours and 60 miles around a ghost town in California.

The US military aims to create autonomous supply vehicles — with a goal of making a third of its supply fleet robotic by 2015 — to… read more

Aging and longevity tied to specific brain region in mice

July 29, 2010

(Shin-Ichiro Imai, Washington University)

Researchers watched two groups of mice, both nearing the end of a two-day fast. One group was quietly huddled together, but the other group was active and alert. The difference? The second set of mice had been engineered so their brains produced more SIRT1, a protein known to play a role in aging and longevity.

“This result surprised us,” says the study’s senior author Shin-ichiro Imai, MD, PhD, an… read more

Aging and the Insulin Pathway

April 8, 2001

New studies show that the insulin-signaling pathway that regulates aging in roundworms serves the same function in fruit flies and yeast.

By manipulating genes relating to insulin-like hormones, scientists were able to extend the lifespan of fruit flies by 85 percent and of yeast by three times.

“If we just could tap into the mammalian version of that system, it might be possible to retard or even reverse… read more

Aging Gracefully Requires Taking Out The Trash

December 20, 2007

Salk Institute scientists have found that boosting autophagy (self-cleaning) in the nervous system of fruit flies prevented the age-dependent accumulation of cellular damage in neurons and promoted longevity.

This research complements previous findings that suppressing autophagy can accelerate the accumulation of protein aggregates, which leads to neural degeneration.

Aging heart cells rejuvenated by modified stem cells

July 25, 2012


Damaged and aged heart tissue of older heart failure patients was rejuvenated by stem cells modified by scientists, according to research presented at the American Heart Association’s Basic Cardiovascular Sciences 2012 Scientific Sessions.

The research could one day lead to new treatments for heart failure patients, researchers said.

“Since patients with heart failure are normally elderly, their cardiac stem cells aren’t very healthy,” said… read more

Aging is recorded in our genes

June 13, 2012

genome-wide DNA methylation levels

Researchers at the Bellvitge Biomedical Research Institute in Barcelona, Spain have found a significantly higher amount of cytosine methylation in the newborn than in the centenarian: 80.5% of all cytosine nucleotides, compared with 73%.

Recent research suggests that changes in DNA methylation patterns as a person gets older may contribute to human diseases for which risk increases with age, including cancer.

DNA is made up of four… read more

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