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Magpies Are Self-Aware
FireStormZ writes "Magpies can recognize themselves in a mirror, confounding the notion that self-awareness is the exclusive preserve of humans and a few higher mammals. It had been thought only four species of apes, bottlenose dolphins, and Asian elephants shared the human ability to recognize their own bodies in a mirror. But German scientists reported on Tuesday that magpies, a species with a brain structure very different from mammals, could also identify themselves. It had been thought that the neocortex brain area found in mammals was crucial to self-recognition. Yet birds, which last shared a common ancestor with mammals 300 million years ago, don't have a neocortex, suggesting that higher cognitive skills can develop in other ways."
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Mars Lander Snaps the Most Detailed Pics Yet
An anonymous reader writes "The Mars Lander has taken its very first microscopic image of a piece of Martian dust (image). The particle, according to the Jet Propulsion Laboratory, is shown at a higher magnification than anything ever seen from another planet. The piece of dust is a rounded particle about a millionth of a meter across. This particle is one of the countless specks of dust that continually swirl around the Red Planet, coloring the Martian sky pink. 'Taking the images required the highest resolution microscope operated off of Earth and a specially designed substrate to hold the Martian dust,' said Tom Pike, a Phoenix science team member. 'We always knew it was going to be technically very challenging to image particles this small.'"
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Amateur Scientists Seek Fusion Reaction
ElvaWSJ writes "A small subculture of amateur physicists and science-fiction fans — fewer than 100 worldwide — are building working nuclear-fusion reactors at home. The designs are based on the work of Philo T. Farnsworth, an inventor of television, from the 1960s. Some of these hobbyists hope similar reactors can one day power the planet, but so far they consume more energy than they create."
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Photoshop Allows Us To Alter Our Memories
Anti-Globalism writes "In an age of digital manipulation, many people believe that snapshots and family photos need no longer stand as a definitive record of what was, but instead, of what they wish it was. It used to be that photographs provided documentary evidence, and there was something sacrosanct about that, said Chris Johnson, a photography professor at California College of the Arts in the Bay Area. If you wanted to remove an ex from an old snapshot, you had to use a Bic pen or pinking shears. But in the digital age, people treat photos like mash-ups in music, combining various elements to form a more pleasing whole. What were doing, Mr. Johnson said, is fulfilling the wish that all of us have to make reality to our liking. And he is no exception. When he photographed a wedding for his girlfriends family in upstate New York a few years ago, he left a space at the end of a big group shot for one member who was unable to attend. They caught up with him months later, snapped a head shot, and Mr. Johnson used Photoshop to paste him into the wedding photo. Now, he said, everyone knows it is phony, but this faked photograph actually created the assumption people kind of remember him as there."
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Obama's Evolving Stance On NASA
mknewman writes "The Houston Chronicle is reporting a change in Obama's stance on NASA, saying his position on space exploration continued to evolve Sunday as the Illinois Democrat endorsed a congressional plan to add $2 billion to NASA's budget and agreed to back at least one more space shuttle mission."
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Mimicking Photosynthesis To Split Water
plantsdoitsocanwe writes "An international team of researchers led by Monash University has used chemicals found in plants to replicate a key process in photosynthesis, paving the way to a new approach that uses sunlight to split water into hydrogen and oxygen. The breakthrough could revolutionize the renewable energy industry by making hydrogen — touted as the clean, green fuel of the future — cheaper and easier to produce on a commercial scale." This was a laboratory demonstration only and the researchers say they need to bring up the efficiency.
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Stars Could Shine In Many Universes
A commonplace of cosmologists who argue the anthropic principle is the assumption that if any or a few of the constants of nature took on an even slightly different value, life could not have evolved — perhaps even stars and galaxies would not form. Science News reports on a new calculation showing that, to the contrary, star formation could happen in up to one-quarter of universes with different values of three important constants. "In fact, all universes can support the existence of stars, provided that the definition of star is interpreted broadly," said the researcher, Fred Adams. "...calculations suggest that, contrary to some previous claims, stars are not only common in our cosmos but are also ablaze in myriad other universes, where the laws of physics may be drastically different... Had Adams found that the range of parameters that allowed for stars was very small, that would have suggested that the laws of physics in our universe have been 'fine-tuned' to allow for star formation... Instead, Adams' study shows that our universe doesn't seem particularly special in that regard."
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Bees Help Detectives Catch Serial Killers
Hugh Pickens writes "The way bumblebees search for food could help detectives hunt down serial killers — because just as bees forage some distance away from their hives, so murderers avoid killing near their homes, says a University of London research team. The researchers' analysis describes how bees create a 'buffer zone' around their hive where they will not forage, to reduce the risk of predators and parasites locating the nest. This behavior pattern is similar to the geographic profile of criminals stalking their victims. 'Most murders happen close to the killer's home, but not in the area directly surrounding a criminal's house, where crimes are less likely to be committed because of the fear of getting caught by someone they know,' says Dr. Nigel Raine. Criminologists will fold this insight into their models using details about crime scenes, robbery locations, abandoned cars, even dead bodies, to hone the search for a suspect."
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Stone Age Mass Graves Reveal Green Sahara
iminplaya sends along a New Scientist article that begins: "One of the driest deserts in the world, the Saharan Tenere Desert, hosted at least two flourishing lakeside populations during the Stone Age, a discovery of the largest graveyard from the era reveals. The archaeological site in Niger [is] called Gobero... It had been used as a burial site by two very different populations during the millennia when the Sahara was lush... 'The first people who used the Gobero cemetery were Kiffian, hunter-gatherers who grew up to two meters tall,' says Elena Garcea of the University of Cassino in Italy and one of the scientists on the team. The large stature of the Kiffian suggests that food was plentiful during their time in Gobero, 10,000 to 8,000 years ago... All traces of the Kiffian vanish abruptly around 8,000 years ago, when the Sahara became very dry for a thousand years. When the rains returned, a different population, the Tenerians, who were of a shorter and more gracile build, based themselves at this site... 'The most amazing find so far is a grave with a female and two children hugging each other. They were carefully arranged in this position. This strongly indicated they had spiritual beliefs and cared for their dead,' says Garcea." The research article is at PLoS One.
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Do Subatomic Particles Have Free Will?
An anonymous reader sends in a Science News article that begins: "Human free will might seem like the squishiest of philosophical subjects, way beyond the realm of mathematical demonstration. But two highly regarded Princeton mathematicians, John Conway and Simon Kochen, claim to have proven that if humans have even the tiniest amount of free will, then atoms themselves must also behave unpredictably" Standard interpretations of quantum mechanics, of course, embrace unpredictability. But many physicists aren't comfortable with that, and are working to develop deterministic interpretations of quantum mechanics. Conway and Kochen's proof argues that these efforts will be fruitless — unless one is willing to give up human free will, in a very strong sense. The article quotes Conway: "We can really prove that there's no algorithm, no way that the particle can give an answer that is unique and can be specified ahead of time. I'm still amazed that we can actually manage to prove that."
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Cassini Finds Source of Icy Jets On Enceladus
Not long ago, we discussed Cassini's mission to "skeet-shoot" Saturn's moon Enceladus in order to take high-resolution pictures as close to the surface as possible. Well, NASA scientists found what they were looking for. A newly released mosaic shows 300-meter-deep fractures in Enceladus' surface which are the source of enormous icy plumes that periodically erupt into space, reaching hundreds of kilometers from the moon's surface. Another picture shows one of the fractures in closer detail.
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Biologists Create Genetic Map of Europe
Death Metal Maniac brings us a story from the New York Times about a team of scientists who were able to relate genetic differences to geographical origins. Countries such as Germany, Austria, and France occupy the central area of the genetic map, with Italy, Finland, and the UK being relative outliers. Quoting: "All the populations are quite similar, but the differences are sufficient that it should be possible to devise a forensic test to tell which country in Europe an individual probably comes from, said Manfred Kayser, a geneticist at the Erasmus University Medical Center in the Netherlands. ... Genomic sites that carry the strongest signal of variation among populations may be those influenced by evolutionary change, Dr. Kayser said. Of the 100 strongest sites, 17 are found in the region of the genome that confers lactose tolerance, an adaptation that arose among a cattle herding culture in northern Europe some 5,000 years ago." Update: 08/16 15:11 GMT: Reader iminplaya points out the source article, which contains the technical details behind the study.
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Brain Will Be Battlefield of the Future, Warns US
Anti-Globalism sends this except from the Guardian: "In a report commissioned by the Defense Intelligence Agency, leading scientists were asked to examine how a greater understanding of the brain over the next 20 years is likely to drive the development of new medicines and technologies. They found several areas in which progress could have a profound impact, including behaviour-altering drugs, scanners that can interpret a person's state of mind and devices capable of boosting senses such as hearing and vision. ...The report highlights one electronic technique, called transcranial direct current stimulation, which involves using electrical pulses to interfere with the firing of neurons in the brain and has been shown to delay a person's ability to tell a lie."
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The US Swim Team's Secret Weapon, Science
Hugh Pickens writes "When American Swimmer Margaret Hoelzer goes for the gold tonight in the 200-meter backstroke, part of her success will be due to a new system developed by Tim Wei, a mechanical and aerospace engineer at Rensselaer Polytechnic Institute, that uses fluid dynamics to study human movement allowing scientists and coaches to study how fast and hard a swimmer pushes the water as he moves through it. 'Wei uses a tracking technique called digital particle image velocimetry, commonly used to measure the flow of small particles around an airplane or small fish or crustaceans in water.' Wei filtered compressed air in a scuba tank through a porous hose to create bubbles about a tenth of a millimeter in diameter. When an athlete swims through a sheet of bubbles that rises from the pool floor, a camera captures their flow around the swimmer's body and the images show the direction and speed of the bubbles, which Wei then translates into the swimmer's thrust using software that he wrote."
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How NASA Will Bomb the Moon To Find Water
mattnyc99 writes "A few weeks ago we got first word of NASA's plan to crash a spacecraft into the moon next February. The new issue of Popular Mechanics has an in-depth look at the Lunar Crater Observation and Sensing Satellite and its low-cost, lightning-fast mission prep — even if delays have pushed it to late February or early March. Quoting: 'Andrews had no budget for an expensive lander to seek water, and conditions in the eternally dark polar craters would kill rovers, with temperatures close to minus 300 F. Instead, Blue Ice and its partners at Northrop Grumman came up with a concept to bring the lunar floor out in the open.... Since engineering precision hardware would break the budget, the LCROSS team had to make existing components work together.'"
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