Dear Reader ,
Here is your customized PHYSorg.com Newsletter for week 25:
Humans will be extinct in 100 years says eminent scientist
(PhysOrg.com) -- Eminent Australian scientist Professor Frank Fenner, who helped to wipe out smallpox, predicts humans will probably be extinct within 100 years, because of overpopulation, environmental destruction and climate change.
New Air Conditioner Conquers All Climates, Saves Up To 90% Energy
Ah, the cool, refreshing feel of air conditioning on a sweltering summer day. Ugh, the discomfort when those energy bills in July, August and September come due — $200, $400, $600 or more.
Scientists see evidence that rules of particle physics may need a rewrite
(PhysOrg.com) -- Two separate collaborations involving Indiana University scientists have reported new results suggesting unexpected differences between neutrinos and their antiparticle brethren. These results could set the stage for what one IU physicist calls a "radical modification of our understanding of particle physics."
Carbon nanotubes show the ability to amplify light, could lead to new photonic applications
(PhysOrg.com) -- "Carbon nanotubes have a lot of really nice properties that make them good for photonics," Laurent Vivien tells PhysOrg.com. Ever since the discovery that carbon nanotubes have photoluminescence when encapsulated in micelle surfactant, Vivien points out, there has been interest in pursuing them for use in nanophotonics, and in microelectronics.
Super-complex organic molecules found in interstellar space
(PhysOrg.com) -- A team of scientists from the Instituto Astrofísica de Canarias (IAC) and the University of Texas has succeeded in identifying one of the most complex organic molecules yet found in the material between the stars, the so-called interstellar medium. The discovery of anthracene could help resolve a decades-old astrophysical mystery concerning the production of organic molecules in space. The researchers report their findings in the journal Monthly Notices of the Royal Astronomical Society.
Researchers design more reliable invisibility cloak
(PhysOrg.com) -- Researchers have proposed a new design for an invisibility cloak - a device that could make objects invisible by guiding light around anything placed inside the cloak.
Delayed time zero in photoemission: New record in time measurement accuracy
German physicists have discovered a time delay when using light pulses to emit electrons from atoms. Until now, it has been assumed that the electrons start moving out of the atom immediately after the impact of the photons. This delay is the shortest time interval measured to date. Science journal reports on their findings in the tomorrow's issue.
Physicists investigate the role of quantum entanglement in the magnetic compasses of animals
(PhysOrg.com) -- Many animals possess some kind of magnetic sense, allowing them to navigate by using a magnetic field. The ability to detect a magnetic field, called magnetoreception, has been observed in a variety of animals, including birds, turtles, sharks, lobsters, cows, fungi, and bacteria. However, scientists do not fully understand the mechanisms responsible for this ability. In a new study, physicists have investigated the role of quantum interactions in magnetoreception, and have shown that quantum technologies could be used to enhance or reduce the performance of an animal's chemical compass, and potentially control other biological functions.
'Quantum computer' a stage closer with silicon breakthrough
The remarkable ability of an electron to exist in two places at once has been controlled in the most common electronic material - silicon - for the first time. The research findings - published in Nature by a UK-Dutch team from the University of Surrey, UCL (University College) London, Heriot-Watt University in Edinburgh, and the FOM Institute for Plasma Physics near Utrecht - marks a significant step towards the making of an affordable "quantum computer".
World first for quantum memory storage
(PhysOrg.com) -- An Australian National University-led team has developed the most efficient quantum memory for light in the world, taking us closer to a future of super-fast computers and communication secured by the laws of physics.
Large sheets of graphene film produced for transparent electrodes (w/ Video)
(PhysOrg.com) -- Graphene is a relatively new material with outstanding electrical, chemical and mechanical properties that make it an attractive material for use as flexible conductors of the sort used in gadgets such as touch screens and flat panel TVs. In the past attempts to make large films of graphene have been unsuccessful, but now a team of scientists from South Korea and Japan have succeeded in roll-to-roll production of graphene films, growing them by chemical vapor deposition onto flexible copper substrates.
New 'fix' for cosmic clocks could help uncover ripples in space-time
An international team of scientists including University of British Columbia astronomer Ingrid Stairs has discovered a promising way to fine-tune pulsars into the best precision time-pieces in the Universe.
Experiment tests underpinnings of quantum field theory, Bose-Einstein statistics of photons
(PhysOrg.com) -- Of all the assumptions underlying quantum mechanics and the theory that describes how particles interact at the most elementary level, perhaps the most basic is that particles are either bosons or fermions. Bosons, such as the particles of light called photons, play by one set of rules; fermions, including electrons, play by another.
Researchers create self-assembling nanodevices that move and change shape on demand
By emulating nature's design principles, a team at Harvard's Wyss Institute for Biologically Inspired Engineering, Harvard Medical School and Dana-Farber Cancer Institute has created nanodevices made of DNA that self-assemble and can be programmed to move and change shape on demand. In contrast to existing nanotechnologies, these programmable nanodevices are highly suitable for medical applications because DNA is both biocompatible and biodegradable.
Engineering researchers achieve organic laser breakthrough
(PhysOrg.com) -- Researchers at the University of Michigan have achieved a long sought-after optics phenomenon that could lead to more efficient and flexible lasers for telecommunications and quantum computing applications, among other uses.
A global teacher of 1,516 lessons and counting
From a tiny closet in Mountain View, Calif., Sal Khan is educating the globe for free. His 1,516 videotaped mini-lectures -- on topics ranging from simple addition to vector calculus and Napoleonic campaigns -- are transforming the former hedge fund analyst into a YouTube sensation, reaping praise from even reluctant students across the world.
Answer to what ended the last ice age may be blowing in the winds, paper says
Scientists still puzzle over how Earth emerged from its last ice age, an event that ushered in a warmer climate and the birth of human civilization. In the geological blink of an eye, ice sheets in the northern hemisphere began to collapse and warming spread quickly to the south. Most scientists say that the trigger, at least initially, was an orbital shift that caused more sunlight to fall across Earth's northern half. But how did the south catch up so fast?
Scientists find explanation for blindsight
(PhysOrg.com) -- The rare phenomenon of blindsight has been known for a long time, but until now has never been understood. People with blindsight are effectively blind through damage to the primary visual cortex and yet may be able to identify colors and to avoid obstacles in their way even though they are not consciously aware of them.
Electronic spectacles coming to market soon
(PhysOrg.com) -- US company PixelOptics has invented electronic spectacles that can automatically change focus as you lower your head to read a book, and could spell the end of the bifocal.
Scientific expertise lacking among 'doubters' of climate change, says Stanford-led analysis
The small number of scientists who are unconvinced that human beings have contributed significantly to climate change have far less expertise and prominence in climate research compared with scientists who are convinced, according to a study led by Stanford researchers.
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