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Here is your customized PHYSorg.com Newsletter for week 38:
Roll over Einstein: Law of physics challenged (Update 3)
One of the very pillars of physics and Einstein's theory of relativity - that nothing can go faster than the speed of light - was rocked Thursday by new findings from one of the world's foremost laboratories.
Scientists turn back the clock on adult stem cells aging
Researchers have shown they can reverse the aging process for human adult stem cells, which are responsible for helping old or damaged tissues regenerate. The findings could lead to medical treatments that may repair a host of ailments that occur because of tissue damage as people age. A research group led by the Buck Institute for Research on Aging and the Georgia Institute of Technology conducted the study in cell culture, which appears in the September 1, 2011 edition of the journal Cell Cycle.
Brain imaging reveals the movies in our mind
Imagine tapping into the mind of a coma patient, or watching one's own dream on YouTube. With a cutting-edge blend of brain imaging and computer simulation, scientists at the University of California, Berkeley, are bringing these futuristic scenarios within reach.
Proton-based transistor could let machines communicate with living things
Human devices, from light bulbs to iPods, send information using electrons. Human bodies and all other living things, on the other hand, send signals and perform work using ions or protons.
Scientists stunned, sceptical on faster-than-light particles
Physicists around the world expressed astonishment and scepticism in equal measure Friday after European scientists reported particles apparently travelling faster than light.
The American 'allergy' to global warming: Why?
(AP) -- Tucked between treatises on algae and prehistoric turquoise beads, the study on page 460 of a long-ago issue of the U.S. journal Science drew little attention.
Humanity falls deeper into ecological debt: study
Humankind will slip next week into ecological debt, having gobbled up in less then nine months more natural resources than the planet can replenish in a year, researchers said Tuesday.
Were Twin Towers felled by chemical blasts? (Update)
A mix of sprinkling system water and melted aluminium from aircraft hulls likely triggered the explosions that felled New York's Twin Towers on September 11, 2001, a materials expert has told a technology conference.
Antimatter sticks around
By successfully confining atoms of antihydrogen for an unprecedented 1,000 seconds, an international team of researchers called the ALPHA Collaboration has taken a step towards resolving one of the grand challenges of modern physics: explaining why the Universe is made almost entirely of matter, when matter and antimatter are symmetric, with identical mass, spin and other properties. The achievement is remarkable because antimatter instantly disappears on contact with regular matter such that confining antimatter requires the use of exotic technology.
Could the Higgs boson explain the size of the Universe?
(PhysOrg.com) -- The Universe wouldn't be the same without the Higgs boson. This legendary particle plays a role in cosmology and reveals the possible existence of another closely related particle.
Could primordial black holes be dark matter?
(PhysOrg.com) -- “We know that about 25% of the matter in the universe is dark matter, but we don’t know what it is,” Michael Kesden tells PhysOrg.com. “There are a number of different theories about what dark matter could be, but we think one alternative might be very small primordial black holes.”
Graphene can be strengthened by folding
(PhysOrg.com) -- With a strength 200 times greater than that of steel, graphene is the strongest known material to exist. But now scientists have found that folding graphene nanoribbons into structures they call “grafold” can enable it to bear even greater compressive loads.
Flying microrobot takes steps toward full autonomy (w/ video)
(PhysOrg.com) -- With the goal of designing an insect-inspired flying microrobot capable of sustained autonomous flight, researchers have demonstrated for the first time a microrobot that achieves vertical flight using closed-loop control. The researchers predict that the approach they use for controlling flight on this one axis could also be used for controlling flight on all three axes.
Computer simulation shows Solar System once had an extra planet
(PhysOrg.com) -- A new study published on arXiv.org shows that, based on computer simulations, Jupiter, Saturn, Uranus and Neptune may not have been the only gas giants in our solar system. According to David Nesvorny from Colorado’s Southwest Research Institute, our current solar system could never have happened without the existence of a fifth planet.
Research demonstrates method that allows inexpensive carbon materials to store hydrogen at room temperature
Hydrogen has long been considered a promising alternative to fossil fuels for powering cars, trucks and even homes. But one major obstacle has been finding lightweight, robust and inexpensive ways of storing the gas, whose atoms are so tiny they can easily escape from many kinds of containers.
Black hole, star collisions may illuminate universe's dark side
Scientists looking to capture evidence of dark matter -- the invisible substance thought to constitute much of the universe -- may find a helpful tool in the recent work of researchers from Princeton University and New York University.
Challenging Einstein is usually a losing venture
(AP) -- Betting against Einstein and his theory of relativity is a way to go broke. For more than a century, everyone from physicists to the Nazi Party - which encouraged the publication of the tract "One Hundred Authors Against Einstein" - has tried to find cracks in his work. And all have failed.
WISE mission captures black hole's wildly flaring jet
(PhysOrg.com) -- Astronomers using NASA's Wide-field Infrared Survey Explorer (WISE) have captured rare data of a flaring black hole, revealing new details about these powerful objects and their blazing jets.
Cloaking magnetic fields: The first 'antimagnet' device developed
Spanish researchers have designed what they believe to be a new type of magnetic cloak, which shields objects from external magnetic fields, while at the same time preventing any magnetic internal fields from leaking outside, making the cloak undetectable.
China to launch space station's first module
China said Tuesday it will launch its Tiangong-1 space module later this month, marking its first step towards building a Chinese space station.
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