Monday, December 29, 2014

Science X Newsletter Week 52

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Here is your customized Phys.org Newsletter for week 52:

Finding faster-than-light particles by weighing them

In a new paper accepted by the journal Astroparticle Physics, Robert Ehrlich, a recently retired physicist from George Mason University, claims that the neutrino is very likely a tachyon or faster-than-light particle. There have been many such claims, the last being in 2011 when the "OPERA" experiment measured the speed of neutrinos and claimed they travelled a tiny amount faster than light. However, when their speed was measured again the original result was found to be in error – the result of a loose cable no less.

Methane is leaking from permafrost offshore Siberia

Yamal Peninsula in Siberia has recently become world famous. Spectacular sinkholes, appeared as out of nowhere in the permafrost of the area, sparking the speculations of significant release of greenhouse gas methane into the atmosphere.

Researchers propose ballistic capture as cheaper path to Mars

(Phys.org)—Space scientists Francesco Topputo and Edward Belbruno are proposing in a paper they have written and uploaded to the preprint server arXiv, the idea of using ballistic capture as a means of getting to Mars, rather than the traditional Hohmann transfer approach. They suggest such an approach would be much cheaper and would allow for sidestepping the need for scheduling launch windows.

Researchers take 'first baby step' toward anti-aging drug

Researchers could be closing in on a "fountain of youth" drug that can delay the effects of aging and improve the health of older adults, a new study suggests.

Halting photons could lead to miniature particle accelerators, improved data transmission

Researchers at MIT who succeeded last year in creating a material that could trap light and stop it in its tracks have now developed a more fundamental understanding of the process. The new work—which could help explain some basic physical mechanisms—reveals that this behavior is connected to a wide range of other seemingly unrelated phenomena.

New research suggests an existing drug, riluzole, may prevent foggy 'old age' brain

Forgetfulness, it turns out, is all in the head. Scientists have shown that fading memory and clouding judgment, the type that comes with advancing age, show up as lost and altered connections between neurons in the brain. But new experiments suggest an existing drug, known as riluzole and already on the market as a treatment for ALS, may help prevent these changes.

Peer review could reject breakthrough manuscripts, study shows

(Phys.org)—A study by Kyle Siler of the Rotman School of Management at the University of Toronto and colleagues has found that well respected peer reviewed journals have rejected manuscripts that could discuss outstanding or breakthrough work. The researchers found that some manuscripts rejected by three leading medical journals went on to receive a large number of citations after publication in other journals. The study appears in the Proceedings of the National Academy of Sciences.

Students aim to put cyanobacteria on Mars to generate oxygen

Mars is a very harsh and hostile environment for future human explorers and like any other known planet it has no breathable air. That could change someday, and it may be soon enough for our generation to witness it, as the student team from Germany has a bold vision to make a first step to terraform the Red Planet, turning it more Earth-like. The plan is to send cyanobacteria to Mars to generate oxygen out of carbon dioxide which is the main component of Martian atmosphere (nearly 96%). "Cyanobacteria do live in conditions on Earth where no life would be expected. You find them everywhere on our planet!" team leader Robert P. Schröder told astrowatch.net. "It is the first step on Mars to test microorganisms." The project is participating in the Mars One University Competition and if it wins, it will be send as a payload to Mars, onboard the Dutch company's mission to the Red Planet. Now everyone can vote to help make it happen by visiting the CyanoKnights.bio webpage.

World's most complex crystal simulated

The most complicated crystal structure ever produced in a computer simulation has been achieved by researchers at the University of Michigan. They say the findings help demonstrate how complexity can emerge from simple rules.

Innovative use of pressurant extends MESSENGER's mission, enables collection of new data

The MESSENGER spacecraft will soon run literally on fumes. After more than 10 years traveling in space, nearly four of those orbiting Mercury, the spacecraft has expended most of its propellant and was on course to impact the planet's surface at the end of March 2015. But engineers on the team have devised a way to use the pressurization gas in the spacecraft's propulsion system to propel MESSENGER for as long as another month, allowing scientists to collect even more data about the planet closest to the Sun.

Lightweight skeletons of modern humans have recent origin

New research shows that modern human skeletons evolved into their lightly built form only relatively recently—after the start of the Holocene about 12,000 years ago and even more recently in some human populations. The work, based on high-resolution imaging of bone joints from modern humans and chimpanzees as well as from fossils of extinct human species shows that for millions of years extinct humans had high bone density until a dramatic decrease in recent modern humans. Published this week in the Proceedings of the National Academy of Sciences, the findings reveal a higher decrease in the density of lower limbs than in that of the upper limbs, suggesting that the transformation may be linked to humans' shift from a foraging lifestyle to a sedentary agricultural one.

New programming language automatically coordinates interactions between Web page components

A Web page today is the result of a number of interacting components—like cascading style sheets, XML code, ad hoc database queries, and JavaScript functions. For all but the most rudimentary sites, keeping track of how these different elements interact, refer to each other, and pass data back and forth can be a time-consuming chore.

Scientists develop first effective and affordable bedbug bait and trap

The world owes a debt of gratitude to Simon Fraser University biologist Regine Gries. Her arms have provided a blood meal for more than a thousand bedbugs each week for five years while she and her husband, biology professor Gerhard Gries, searched for a way to conquer the global bedbug epidemic.

Can astronomy explain the biblical Star of Bethlehem?

Bright stars top Christmas trees in Christian homes around much of the world. The faithful sing about the Star of Wonder that guided the wise men to a manger in the little town of Bethlehem, where Jesus was born. They're commemorating the Star of Bethlehem described by the Evangelist Matthew in the New Testament. Is the star's biblical description a pious fiction or does it contain some astronomical truth?

The Milky Way's new neighbour

The Milky Way, the galaxy we live in, is part of a cluster of more than 50 galaxies that make up the 'Local Group', a collection that includes the famous Andromeda galaxy and many other far smaller objects. Now a Russian-American team have added to the canon, finding a tiny and isolated dwarf galaxy almost 7 million light years away. Their results appear in Monthly Notices of the Royal Astronomical Society.

Scientists discover oldest stone tool ever found in Turkey

Scientists have discovered the oldest recorded stone tool ever to be found in Turkey, revealing that humans passed through the gateway from Asia to Europe much earlier than previously thought, approximately 1.2 million years ago.

110-million-year-old crustacean holds essential piece to evolutionary puzzle

University of Alberta PhD student Javier Luque has found the oldest crown-group true higher crab ever discovered, deep in the tropics of Colombia. The discovery of Telamonocarcinus antiquus pushes back the oldest known record of true higher crabs into the Early Cretaceous, dating about 110 million years ago.

Average temperature in Finland has risen by more than two degrees

Over the past 166 years, the average temperature in Finland has risen by more than two degrees. During the observation period, the average increase was 0.14 degrees per decade, which is nearly twice as much as the global average.

Hubbles spies the beautiful galaxy IC 335

This new NASA/ESA Hubble Space Telescope image shows the galaxy IC 335 in front of a backdrop of distant galaxies. IC 335 is part of a galaxy group containing three other galaxies, and located in the Fornax Galaxy Cluster 60 million light-years away.

Light-emitting e-readers detrimentally shift circadian clock, study shows

You may think your e-reader is helping you get to sleep at night, but it might actually be harming your quality of sleep, according to researchers. Exposure to light during evening and early nighttime hours suppresses release of the sleep-facilitating hormone melatonin and shifts the circadian clock, making it harder to fall asleep at bedtime.


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