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General Relativity Sinks Submarine

August 1, 2003

A Brazilian physicist has resolved a paradox highlighted by Einstein’s theory of relativity, which explains how movement at close to light speed can distort space. Apparently, underwater there is some inconsistency in that theory, as the Brazilian physicist has discovered with the help of a submarine vessel. Since the density increase would sink the vessel, the submarine crew would see the opposite: water rushing past them would contract and get… read more

Man controls cybernetic hand with thoughts

December 4, 2009

(Campus Bio-Medico di Roma)

A brain-controlled bionic hand attached to an amputee’s nervous system via electrodes implanted into the remaining part of his left arm has been developed by scientists at Pisa’s Valdera Polo Sant’Anna School.

The patient was able to experience sensations when grasping and making a fist.

Tiny Blood Pumps for Failing Hearts

May 8, 2008

CircuLite, an Australian company, is developing an implantable pump that weighs just one-sixth as much as its smallest predecessor.

About the size of a AA battery, it could ultimately be implanted through a catheterization procedure that is far less invasive than the operations used to place today’s pumps. It could thus be used to treat patients in earlier stages of heart failure, for whom implantation surgery had previously been… read more

Calorie restriction may prevent Alzheimer’s through promotion of longevity program in the brain

June 16, 2006

A recent study directed by Mount Sinai School of Medicine suggests that experimental dietary regimens might calm or even reverse symptoms of Alzheimer’s Disease (AD).

The study, which appears in the July 2006 issue of the Journal of Biological Chemistry, is the first to show that restricting caloric intake, specifically carbohydrates, may prevent AD by triggering activity in the brain associated with longevity.

People with AD exhibit elevated… read more

Computational biomarkers can identify at-risk heart attack victims

September 29, 2011

EKG electrocardiogram (credit: iStockphoto)

Subtle markers of heart damage hidden in plain sight among hours of EKG recordings could help doctors identify which heart attack patients are at high risk of dying soon, researchers from the University of Michigan, MIT, Harvard Medical School, and Brigham and Women’s Hospital in Boston have discovered,

The findings could help match tens of thousands of cardiac patients with life-saving treatment in time. Approximately… read more

Return of the green Luddites

August 12, 2003

Environmental activists want governments to enforce the “precautionary principle,” which states that when there is any risk of a major disaster, scientific progress must halt….

“The folks at Greenpeace must have been watching too many ‘Matrix” and ‘Terminator’ movies, because their report spends a few dozen pages worrying about the threat of ‘predatory machines’ and a ‘robot take-over.’”

Scientists discover first evidence of brain rewiring in children

December 10, 2009

Intensive instruction to improve reading skills in young children causes the brain to physically rewire itself, creating new white matter that improves communication within the brain, Carnegie Mellon University scientists have discovered, with implications for treating reading disabilities and other developmental disorders, including autism.

Google Wants to Help Web Sites Make New Friends

May 13, 2008

On Monday, Google introduced Google Friend Connect, a program designed to allow small Web sites to add some social networking features without sophisticated programming, by tapping into the existing systems run by AOL, Yahoo, Google, Facebook, LinkedIn, and others.

CJD-related disease can incubate for 50 years

June 28, 2006

Variant Creutzfeldt-Jakob disease (vCJD), a prion disease passed from cows to humans, could well have an average incubation time of 30 years or longer.

Stem-cell reprogramming method not to blame for mutations: Scripps scientists

October 7, 2011

Scientists at the Scripps Research Institute have discovered that a reprogramming method is not to blame for dangerous mutations found within Induced Pluripotent Stem Cells (iPSC) — adult stem cells that have been genetically coaxed into behaving like embryonic stem cells. The discovery may help narrow down the exact cause of the mutations, long a roadblock to iPSC’s widespread use.

There have been a… read more

Robot spy can survive battlefield damage

August 21, 2003

A self-healing military reconnaissance robot being developed can keep moving even if it gets damaged on the battlefield.

When any of the snake-like robot’s shape-memory-alloy “muscle” segments are damaged, genetic-algorithm software “evolves” a different way for it to wriggle across any terrain.

Complex Integrated Circuits Made of Carbon Nanotubes

December 17, 2009

The first three-dimensional carbon nanotube circuits, made by researchers at Stanford University, could be an important step in making nanotube computers in the coming decade that could be faster and use less power than today’s silicon chips.

The Stanford nanotube arrays are some of the densest ever made, with five to 10 nanotubes per micrometer, and the design makes it possible to create more complex nanotube circuits. But 100… read more

Higher vitamin D levels associated with lower rates of breast cancer

May 19, 2008

University of California San Diego researchers have found a clear association between limited exposure to sunlight (ultraviolet B, which triggers production of vitamin D in the body) and breast cancer.

They used worldwide data available through GLOBOCAN, a database of cancer incidence, mortality and prevalence for 175 countries. They plotted incidence rates by latitude, and found breast cancer rates were highest at the highest latitudes in both the north… read more

How to store images in a cloud of moving atoms

April 5, 2013

cloud_atoms_memory

Scientists at the Joint Quantum Institute (JQI) of the National Institute of Standards and Technology (NIST) and the University of Maryland have demonstrated that they can store visual images in a thin vapor of rubidium atoms.

The effort may prove helpful in creating memory for quantum computers.

Their work builds on an approach developed at the Australian National University, where scientists showed that a rubidium… read more

Seeking answers from the cosmic consciousness

July 9, 2006

Stephen Hawking has turned to Yahoo Answers for public answers to the question: “In a world that is in chaos politically, socially and environmentally, how can the human race sustain another 100 years?”

By afternoon July 7, nearly 17,000 Yahoo users had responded.

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