Leading scientist Stephen Hawking‘s condition has improved
after being admitted to hospital with chest problems, Cambridge University says. His employers said Professor Hawking was undergoing tests on Monday at Addenbrooke’s Hospital, Cambridge. A university spokesman said the 67-year-old, who has motor neurone disease, was now comfortable
Rensselaer Polytechnic Institute in New York is developing flexible nanotubes inserted under the skin to create a handheld display — inside your hand. They wirelessly receive data and display reminders and text messages, and the concept has also been broadened to suggest endlessly programmable digital tattoos, while Netherlands-based Royal Philips Electronics is also exploring the concept of the body as a platform for electronics and interactive skin technologies
— Slashdot
British scientists have developed the world’s first stem cell therapy to cure the most common cause of blindness. Surgeons predict it will become a routine, one-hour procedure that will be generally available in six or seven years’ time. The treatment involves replacing a layer of degenerated cells with new ones created from embryonic stem cells. It was pioneered by scientists and surgeons from the Institute of Ophthalmology at University College London and Moorfields eye hospital
Law enforcement officials are vastly expanding their collection of DNA to include millions more people who have been arrested or detained but not yet convicted. The move, intended to help solve more crimes, is raising concerns about the privacy of petty offenders and people who are presumed innocent. Until now, the federal government genetically tracked only convicts. But starting this month, the Federal Bureau of Investigation will join 15 states that collect DNA samples from those awaiting trial and will collect DNA from detained immigrants — the vanguard of a growing class of genetic registrants. The FBI, with a DNA database of 6.7 million profiles, expects to accelerate its growth rate from 80,000 new entries a year to 1.2 million by 2012 — a 15-fold increase. FBI officials say they expect DNA processing backlogs — which now stand at more than 500,000 cases — to increase
A study into spam has blamed it for the production of more than 33bn kilowatt-hours of energy every year, enough to power more than 2.4m homes. The Carbon Footprint of e-mail Spam report estimated that 62 trillion spam emails are sent globally every year. This amounted to emissions of more than 17 million tons of CO2, the research by climate consultants ICF International and anti-virus firm McAfee found. Searching for legitimate e-mails and deleting spam used some 80% of energy. The study found that the average business user generates 131kg of CO2 every year, of which 22% is related to spam
The tweenbot, a cardboard-bodied, cheerful little bugger, is equipped with a flag stating its intended destination. Since it can only move forward, it depends on the kindness of strangers to guide it and remove obstacles. In New York City, we might expect the smiley-faced tweenbot to be stabbed, stomped, mugged, or covered in graffiti, but every single one of the journeys was completed without a hitch. Pedestrians would stop and help the little guy when he was trapped against a curb or headed into traffic, and point him in the right direction
Dye-sensitised solar cells work by absorbing photons on an inexpensive thin-film composed of dye molecules attached to a titanium oxide layer on a glass or plastic substrate. When the dye molecules absorb a photon, the resultant excitation injects electrons into the titanium, which transports them to the negative electrode. Dye-sensitised solar cells are favored as a thin-film material because they work in low-light conditions and are fabricated with environmentally benign materials compared to silicon solar cells. However, silicon cells have more than twice the efficiency, as much as 20 percent compared to less than 10 percent for dye-sensitised solar cells. If diatoms could triple the efficiency of dye-sensitised solar cells, they could potentially offer comparable efficiency at a lower cost, especially in low lighting conditions
Biomimetic adhesives aren’t new, but Simon Fraser University PhD graduate Dan Sameoto has developed a new method of creating microscopic, mushroom-like plastic structures in order to produce a dry adhesive that mimics the stickiness of gecko feet. And he is prepping his innovation for outer space
For the first time, MIT researchers have shown they can genetically engineer viruses to build both the positively and negatively charged ends of a lithium-ion battery. The new virus-produced batteries have the same energy capacity and power performance as state-of-the-art rechargeable batteries being considered to power plug-in hybrid cars, and they could also be used to power a range of personal electronic devices, said Angela Belcher, the MIT materials scientist who led the research team
Yeast cells feeding on the glucose in human blood might one day power implants such as pacemakers. A living source of power that is able to regenerate itself would eliminate the need for regular operations to replace batteries. Now that prospect is a step nearer. A team at the University of British Columbia in Vancouver, Canada, has created tiny microbial fuel cells by encapsulating yeast cells in a flexible capsule. They went on to show the fuel cells can generate power from a drop of human blood plasma
A big explosion, in the name of science, scared a lot of people in a small town. Mythbusters went to Yolo County and ended up with a bigger bang than expected.
It was a boom that was just — I had never heard anything like that before, it was really weird,
said Sherril Stephens. The explosion was so big it shook the town of Esparto, knocking Stephens off her couch and breaking her front window
An international team of researchers has successfully treated dogs with the canine form of Duchenne muscular dystrophy (DMD), a rapidly progressing and ultimately fatal muscle disease that afflicts one out of every 3,600 boys. The researchers used a novel technique called exon skipping to restore partial function to the gene involved in Duchenne. The study, published in Annals of Neurology, gives hope that a similar approach could work in humans
Scientists in Britain plan to become the first in the world to produce unlimited amounts of synthetic human blood from embryonic stem cells for emergency infection-free transfusions. A major research project is to be announced this week that will culminate in three years with the first transfusions into human volunteers of synthetic
blood made from the stem cells of spare IVF embryos. It could help to save the lives of anyone from victims of traffic accidents to soldiers on a battlefield by revolutionising the vital blood transfusion services, which have to rely on a network of human donors to provide a constant supply of fresh blood
Ray Baughman and his colleagues have produced a formulation that’s stronger than steel, as light as air and more flexible than rubber — a truly 21st century muscle. It could be used to make artificial limbs, smart
skins, shape-changing structures, ultra-strong robots and — in the immediate future — highly-efficient solar cells. We can generate about 30 times the force per unit area of natural muscle,
said Baughman, director of the NanoTech Institute at the University of Texas at Dallas
Mental powers start to dwindle at 27 after peaking at 22, marking the start of old age, US research suggests. Professor Timothy Salthouse of the University of Virginia found reasoning, spatial visualisation and speed of thought all decline in our late 20s. Therapies designed to stall or reverse the ageing process may need to start much earlier, he said. His seven-year study of 2,000 healthy people aged 18-60 is published in the journal Neurobiology of Aging
Three new species of bacteria, which are not found on Earth and which are highly resistant to ultra-violet radiation, have been discovered in the upper stratosphere by Indian scientists. One of the new species has been named as Janibacter hoylei, after the Distinguished Astrophysicist Fred Hoyle, the second as Bacillus isronensis recognising the contribution of ISRO in the balloon experiments which led to its discovery and the third as Bacillus aryabhata after India’s celebrated ancient astronomer Aryabhata and also the first satellite of ISRO
Superconductors, materials that carry electricity without resistance, can be divided into two broad groups depending on how they react to a magnetic field — or so physicists thought. New experiments show that one well-studied superconductor actually belongs to both groups at the same time. If the experiment is true, this would add a whole new class of superconductors
, says Egor Babaev, a theorist at the University of Massachusetts, Amherst. The advance may not immediately lead to new gadgets and applications, but it suggests that superconductivity, which has already netted four Nobel Prizes, may be an even richer phenomenon that previously thought
Bugs that skate on water can do it because their feet are superhydrophobic. Chinese scientists applied a similar coating to a tiny copper mesh boat, and suddenly it could hold three times the weight. The superhydrophobic coating creates a cushion of air around the boat, putting an invisible bubble between it and the water. The boat is literally floating on air, while the water tries to touch it but can’t. What’s creepy is that the coated boats sink immediately when immersed in organic liquids like ethanol and acetone
Material scientists from the University of Southern Mississippi have created a new polymer that can fix its own scratches under regular sunlight, a feat that has no end of practical applications
The US Department of Homeland Security plans to study the possibility that human body odour could be used to tell when people are lying or to identify individuals in the same way that fingerprints can
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