We’re all hallucinating all the time. When we agree about our hallucinations, we call it “reality.”
Watch the full TED Talk here: http://bit.ly/2LiHAXo
Isaac Asimov was one the world’s most celebrated and prolific science fiction writers, having written or edited more than 500 books over his four-decade career. The Russian-born writer was famous for penning hard science fiction in his books, such as that in I, Robot, Foundation and Nightfall. Naturally, his work contained many predictions about the future of society and technology.
We’re not living in space, but the Russian science-fiction author foresaw the rise of intelligent machines and the disruption of the digital age.
Continue reading “In 1983, Isaac Asimov predicted the world of 2019. Here’s what he got right” »
LEAF writer Nicola Bagalà considers whether living past 40 is fundamentally different from living past 80.
Imagine this scene: you, a life extension supporter, are with a group of people talking about this and that, and, at one point, the opportunity to mention life extension presents itself. You expect people to react to it with “Yay! Longer life in good health! No more aging!” but reality doesn’t quite match up to your expectations; rather, all you get is the frustration of looking at how everyone nods approvingly when somebody puts on a great philosopher’s hat and asks rhetorically: “Would it really make us happier if we could live to 150?” Boy, is that ever irritating.
Actually, it isn’t really the specific question per se that is irritating—basically, whether living much longer than the current average would bring us more happiness—but rather that nobody ever asks whether living to 80 years old, for example, would make you any happier than you would be if you lived to only 40. If the first question is legitimate, the second one should be as well, and, by induction, you could work your way down to zero and ask whether being born makes you any happier than not being born. (Arguably, it doesn’t—babies inside the womb are generally quite peaceful and blessed looking, which is more than can be said of their mood once they pop out, but few people would agree that this is a good reason to abort each and every fetus.)
Measured against that boom—one of the most impressive periods of scientific achievement in human history—China’s new hardware, grand as it often is, falls a bit short. It has been catching up, not forging ahead. It has not been a beacon for scientists elsewhere. And far from benefiting from a culture of free inquiry, Chinese science takes place under the beady eye of a Communist Party and government which want the fruits of science but are not always comfortable about the untrammelled flow of information and the spirit of doubt and critical scepticism from which they normally grow.
The hypothesis that scientific greatness requires freedom of thought is about to be tested.
Continue reading “Can China become a scientific superpower?” »
This new study, led by the MRC’s Laboratory of Molecular Biology (LMB) in Cambridge, used microscopic imaging to observe the detailed internal molecular clock timing of the astrocytes and neurons of the SCN. Surprisingly, this showed that although both types of cell have their own circadian clocks, they are differently regulated and were seen to be active at different times of the day. This delicate interplay was found to be critical in keeping the entire SCN clockwork ticking.
A new study has found that astrocytes, previously thought of as just supporting neurons in regulating circadian rhythms, can actually lead the tempo of the body’s internal clock and have been shown for the first time to be able to control patterns of daily behavior in mammals.
The Staphylococcus aureus bacterium is one of the commonest pathogens and can even cause sepsis. The new antibiotic dalbavancin is very effective against many bacterial pathogens. However, resistance to the antibiotic was seen to develop during the long-term treatment of a patient with an infection caused by an implanted cardiac device. A team of researchers led by infectiologists from the Division of Infectious Diseases and Tropical Medicine within the Department of Medicine I at MedUni Vienna, Manuel Kussmann and Heimo Lagler, have now described the phenotypical and genotypical mechanism of this development of resistance for the first time. The study was published in leading journal “Emerging Microbes & Infections”.
Staphylococci are bacteria and are part of the normal flora on the skin of humans and animals. Approximately 20% of the Austrian population permanently carry the germ, which is often located in the nasal cavity. There are harmless variants, which only cause mild symptoms, if any at all. In serious cases, the pathogen can find its way into the bloodstream and cause endocarditis and sepsis.
A problematic strain is Staphylococcus aureus, which can be acquired outside hospital but also in hospital as a so-called “hospital-acquired infection”. There are multi-resistant forms of it, which do not necessarily cause serious illness in healthy people. However, in weakened hospital patients or where the natural skin barrier is damaged, infection can result in complications. Nowadays dalbavancin, a latest generation antibiotic, is one of the drugs successfully used to treat multi-resistant bacteria. One of the advantages of this drug is its very long half-life of approximately nine days, so that intravenous treatment can be given on an outpatient basis. However, clinical experience has shown that, sooner or later, resistance develops to any therapeutic use of new antibiotics, so it was just a matter of time with this one.
By Helen Thomson
Old age may have its downsides, but losing the ability to grow new brain cells isn’t one: healthy people in their seventies seem to produce just as many new neurons as teenagers.
The discovery overturns a decades-old theory about how our brains age and could provide clues as to how we can keep our minds sharper for longer.
Continue reading “Old people can produce as many new brain cells as teenagers” »
Australia’s New South Wales scientists have adapted single atom technology to build 3D silicon quantum chips – with precise interlayer alignment and highly accurate measurement of spin states. The 3D architecture is considered a major step in the development of a blueprint to build a large-scale quantum computer.
They aligned the different layers in their 3D device with nanometer precision – and showed they could read out qubit states with what’s called ‘single shot’, i.e. within one single measurement, with very high fidelity.
Continue reading “3D Atomic Quantum Chips and Advance to Eventual Large Scale Quantum Tech” »
