Science & TechnologyS


Info

Jacques Vallée - A Theory of Everything (Else)

Dr. Jacques Vallee
© YouTube/TedX
Dr. Vallee was born in France, where he received a B.S. in mathematics at the Sorbonne and an M.S. in astrophysics at Lille University. Coming to the U.S. as an astronomer at the University of Texas, where he co-developed the first computer-based map of Mars for NASA, Jacques later moved to Northwestern University where he received his Ph.D. in computer science. He went on to work on information technology research at SRI International and the Institute for the Future, where he directed the project to build the world's first network-based collaboration system as a Principal Investigator for the groupware project on Arpanet, the prototype for the Internet.


A venture capitalist since 1984, Jacques Vallee has served as an early-stage investor and director of over 60 high-technology companies, a third of which went public through acquisitions or IPOs. Apart from his work with information science and finance, Jacques has had a long-term private interest in astronomy, in writing and in the frontiers of research, notably unidentified aerial phenomena. His most recent book, The Heart of the Internet, is available free of charge on Google Books. He was awarded the Jules Verne Prize for a science fiction novel in French.

Cell Phone

The End of Caller ID

Image
© John R. Coughlin/CNN Money
If a number's not in our address book, attached to a very familiar name, there's no reason to pick it up -- it's probably something evil.

Before, if a number even had a familiar area code, it was probably okay to pick it up. It was the hairdresser confirming an appointment, or the school calling about your good-for-nothing kids. But now that telemarketers and debt collectors have figured out ways to game call-screeners by spoofing phone numbers, as The New York Times's Matt Richtel points out, we have completely lost trust in any unknown numbers.

"You don't know who is on the other end of the line, no matter what your caller ID might say," Sandy Chalmers, a division manager at the Department of Agriculture, Trade and Consumer Protection in Wisconsin, told Richtel.

But in an age when many people carry cell phones stocked with hundreds or thousands of phone numbers accumulated over the years, Caller ID is already behind the times. We're trained to screen calls from numbers we don't recognize. From here onward it's only trusted address book contacts for us. Email us before you try calling us on that bizarrely area-coded Google Voice number.

Sun

Best of the Web: Climategate 2.0: New E-Mails Rock The Global Warming Debate

I don't believe in global warming
© paul nine-o/Flickr
A new batch of 5,000 emails among scientists central to the assertion that humans are causing a global warming crisis were anonymously released to the public yesterday, igniting a new firestorm of controversy nearly two years to the day after similar emails ignited the Climategate scandal.

Three themes are emerging from the newly released emails: (1) prominent scientists central to the global warming debate are taking measures to conceal rather than disseminate underlying data and discussions; (2) these scientists view global warming as a political "cause" rather than a balanced scientific inquiry and (3) many of these scientists frankly admit to each other that much of the science is weak and dependent on deliberate manipulation of facts and data.

Regarding scientific transparency, a defining characteristic of science is the open sharing of scientific data, theories and procedures so that independent parties, and especially skeptics of a particular theory or hypothesis, can replicate and validate asserted experiments or observations. Emails between Climategate scientists, however, show a concerted effort to hide rather than disseminate underlying evidence and procedures.

Info

Earth's Core Starved for Oxygen

The Earth's Interior
© USGSThe Earth's Interior.
The Earth's intensely hot and super-pressurized core is even harsher than scientists realized, according to a study published today in the journal Nature.

Oxygen does not have a major presence in the outer core, according to the new research. This has major implications for scientists' understanding of the period when the Earth formed through the accretion of dust and clumps of matter.

The composition of the Earth's core remains a mystery - just last year scientists found it has another layer. Scientists know that the liquid outer core consists mainly of iron, but it is believed that small amounts of some other elements are present as well. Oxygen is the most abundant element on the planet, so it is not unreasonable to expect oxygen might be one of the dominant "light elements" in the core. But that's not so, the new research says.

Satellite

Russia's stranded Mars probe sends signal to Earth

Image
© AP/ Russian Roscosmoc space agencyIn this Nov.2, 2011 photo distributed by Russian Roscosmos space agency on Wednesday, Nov. 9, 2011, the unmanned Phobos-Grunt probe is seen on the Baikonur Cosmodrome, Kazakhstan.
Engineers fought desperately on Wednesday to save Russia's Phobos-Grunt spacecraft after the Martian probe sent "a first sign of life" more than two weeks after being stranded in orbit.

After days of frustrating silence, contact with the probe was made on Tuesday at 2025 GMT at a European Space Agency ground station in Perth, Western Australia, the Paris-based ESA said.

"ESA teams are working closely with engineers in Russia to determine how best to maintain communication with the spacecraft," it said.

A spokesman at European Space Operations Centre (ESOC) in Darmstadt, Germany, told AFP: "We sent an instruction to (the probe) to switch on its transmitter and the probe sent us telemetric data.

"However, we do not have all the details and we are not very sure of what we received. It's a first sign of life," he said.

The probe is in a "very low, very unfavourable orbit (that) is difficult to identify accurately," the spokesman added.

Syringe

Tweaking a gene makes muscles twice as strong

marathon mice gene therapy
© Unknown
A team of researchers at EPFL, the University of Lausanne and the Salk Institute created super strong, marathon mice and nematodes by reducing the function of a natural inhibitor, suggesting treatments for age-related or genetically caused muscle degeneration are within reach.

It turns out that a tiny inhibitor may be responsible for how strong and powerful our muscles can be. This is the surprising conclusion reached by scientists in EPFL's Laboratory of Integrative Systems Physiology (LISP), in collaboration with a group in the Center for Integrative Genomics at the University of Lausanne and at the Salk Institute in California. By acting on a receptor (NCoR1), they were able to modulate the transcription of certain genes, creating a strain of mighty mice whose muscles were twice a strong as those of normal mice.

Info

Cosmic Antimatter Excess Confirmed

Antimatter Detector
© Naval Research Laboratory/NASADetector. The Fermi telescope, visible here as the large silver "box" atop the satellite, has confirmed an anomalous antimatter signal in the cosmic ray spectrum.

In 2008, the Italian satellite PAMELA picked up an unusual signal: a spike in antimatter particles whizzing through space. The discovery, controversial at the time, hinted that physicists might be coming close to detecting dark matter, an enigmatic substance thought to account for 85% of the matter in the universe. Now, new data from NASA's Fermi Gamma-ray Space Telescope confirm the spike. Alas, they also undermine its interpretation as a sign of dark energy.

Theorists generally believe that when two dark matter particles collide, they should annihilate each other to produce ordinary particles, such as an electron and its antimatter twin, a positron. Thanks to Einstein's iconic equivalence between energy and mass, E=mc2, each of those particles should emerge with an energy essentially equal to the mass of the original dark matter particle. So when the PAMELA team saw a spike in the ratio of positrons to the more abundant electrons over a particular slice of the energy spectrum, some physicists got excited. Perhaps PAMELA was seeing evidence of such annihilations.

However, because positrons are produced elsewhere in the universe, including in pulsars and neutron stars, the result was inconclusive at best - although it stirred quite a frenzy. At a conference where the preliminary PAMELA data was being presented, physicists used cell phones to snap photos of the Italian team's slides, then wrote and published papers on the Internet about the data's dark matter significance, all before the results were prepared for submission to a refereed journal.

The plot thickened in 2009 when the Fermi team released data from its own satellite's look at the cosmic ray spectrum, which showed no signals out of the ordinary. However, in that analysis, the Fermi group considered the sum total of all charged particles, electrons, and positrons. That was because the telescope was designed to measure neutral gamma rays and has no onboard magnet for distinguishing negatively charged electrons and positively charged positrons.

Info

Could Electrical Sprites Hold the Key to Extraterrestrial Life?

Sprites
© University of Alaska FairbanksFull color image of a red lightning sprite.
In 1989, meteorologists discovered sprites. Not the spirits, elves, or pixies that pepper Shakespearean comedies but their equally elusive electrical namesakes. Lightning sprites are large scale electrical discharges inside the clouds above storms that make the upper atmosphere glow, sort of like a fluorescent lightbulb.

Meteorologists have already determined that sprites likely aren't unique to Earth. In fact, this elusive form of lightning might be common throughout the solar system. Now, researchers at Tel Aviv University are asking whether the presence of sprites on other planets could indicate the presence of organic material in their atmospheres.

Though not an uncommon phenomena, sprites are incredibly hard to find and observe. They can only be captured with highly sensitive high speed cameras. Sprites occur in the Earth's Mesosphere, layer between the stratosphere and the thermosphere - about 50 km (31 miles) to 90 km (56 miles) high. At this altitude, the gases that make up our atmosphere are much thinner and unable to hold heat from the Sun making the average temperature a chilly 5°F (-15°C) to as low as -184°F (-120°C).

Cloud Lightning

Tall water waves behave unexpectedly

tall water waves
© Jon WilkeningA snapshot of a standing water wave from the animation below.
In investigating the behavior of large-amplitude standing water waves, mathematician Jon Wilkening of the University of California, Berkeley, has discovered that the waves' behavior cannot be explained as simply as previously proposed. Questions regarding the dynamics of standing water waves have gone unanswered for decades since numerical simulations have not been powerful enough to explore wave behavior with sufficient accuracy. In the new study published in Physical Review Letters, Wilkening has used numerical simulations with a sufficiently high resolution (capable of achieving 26 digits of accuracy) to help better understand the dynamics that occur at the crests of standing water waves.

In his study, Wilkening explains that standing water waves (those that slosh in and out symmetrically) and traveling water waves (those that travel across the surface of the water with a constant shape) have very different "limiting behavior."

"Standing waves and traveling waves both come in families," Wilkening explained to PhysOrg.com. "Larger amplitude waves are more sharply peaked at the crest than lower amplitude waves. 'Limiting behavior' refers to the behavior when you increase the value of the parameter to its maximum value."

Info

Inside the Brains of Psychopaths

Crime Scene
© Flynt | Dreamstime.comPsycopaths are estimated to make up 1 percent of the population and up to 25 percent of male offenders in federal correctional settings.

Differences in psychopaths' brains may help explain their anti-social behavior, according to new research.

Psychopaths are identified as highly selfish, and lacking in emotion and conscience. Experts estimate that about 1 percent of the general population and as many as 25 percent of male offenders in federal correctional settings are psychopaths. Research looking into the minds of psychopaths has found not only differences in their brains but also, at least in one recent study, speech patterns.

In the new study, which relied on scans of the brains of psychopaths incarcerated in Wisconsin, the researchers found reduced connections between a part of the brain associated with empathy and decision-making, known as the ventromedial prefrontal cortex (vmPFC), and other parts of the brain.

Using two different types of images, the researchers compared the brains of male prisoners diagnosed as psychopaths with those of prisoners who did not receive this diagnosis. Among the psychopathic prisoners, the researchers found weaker connections between the vmPFC and other parts of the brain, including the amygdala.