Science & TechnologyS


Laptop

Beware Mac Users: Flashback Botnet Issue Discovered

Mac
© redOrbit

Russian Security Firm Dr. Web says they've discovered a botnet infecting nearly half a million Macs worldwide. The firm made their announcement on Wednesday about the more than 550,000 infected Macs. Later in the day, however, their malware specialist Sorokin Ivan increased this number, saying he had discovered more than 600,000 Macs on the botnet, with 274 of these Macs located at Apple's headquarters in Cupertino, according to Ars Technica.

Though no other security firm has been able to corroborate these numbers, such a discovery raises concern for Mac users as they are usually less likely to contract a virus malware on their machines.

In a blog post describing the outbreak, Dr. Web said they had been studying the Trojan responsible for infecting the computers, called Backdoor.Flashback.39. Of all the infected machines, 12% were located in the UK, 19% were located in Canada, and more than 50% were housed in America.

Dr Web's blog said, "Systems get infected with BackDoor.Flashback.39 after a user is redirected to a bogus site from a compromised resource or via a traffic distribution system," it said. "JavaScript code is used to load a Java-applet containing an exploit. Doctor Web's virus analysts discovered a large number of web-sites containing the code."

Info

Surprise! Venus May Have Auroras Without a Magnetic Field

Venus
© ESAVenus' southern hemisphere, as seen in the ultraviolet.

The same magnetic phenomenon that causes auroras on Earth has now surprisingly been discovered creating giant magnetic bubbles around Venus, a planet without a magnetic field.

These findings could help explain mysterious flashes of light from Venus, in addition to the way comet tails work, researchers say.

The Northern and Southern Lights on Earth are caused by magnetic lines of force breaking and connecting with each other. This process, known as magnetic reconnection, can explosively convert magnetic energy to heat and kinetic energy.

Scientists had seen magnetic reconnection with planets only when they had intrinsic magnetic fields, such as Earth, Mercury, Jupiter and Saturn. These magnetic fields deflect charged particles in the solar wind streaming from the sun into a shell surrounding the planet known as a magnetosphere. Magnetic reconnection can occur within magnetospheres, leading to auroras and magnetic storms.

Arrow Up

'PAL-V ONE' flying car takes maiden flight

Image
© pal-v.comThe PAL-V ONE
The future is here.

The Dutch company PAL-V has successfully built and tested the prototype for a flying car, the PAL-V ONE (Personal Air and Land Vehicle).

Tecca's Mariella Moon describes the gyrocopter PAL-V ONE as "most of a flying three-wheeled enclosed motorcycle." If it becomes commercially available - Geekosystem reports the vehicle is "slated to go into production in 2014" - drivers will fly below an altitude of 4,000 feet in uncontrolled airspace, nowhere near the commercial jets flying above at 30,000-plus feet.

"The PAL-V ONE has a very short take off and landing capability, making it possible to land practically anywhere. When not using controlled airspace, you can take off without filing a flight plan," states the official site.

Info

New Gigantic Tornado Spotted on Mars

Mars Tornado
© NASA/JPL-Caltech/UAA Martian dust devil roughly 12 miles (20 kilometers) high was captured winding its way along the Amazonis Planitia region of Northern Mars on March 14, 2012 by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter. Despite its height, the plume is little more than three-quarters of a football field wide (70 yards, or 70 meters).
Last month, we were excited to share an image of a twister on Mars that lofted a twisting column of dust more than 800 meters (about a half a mile) high. We now know that's nothin' - just peanuts, chump change, hardly worth noticing.

The Mars Reconnaissance Orbiter has now spotted a gigantic Martian dust devil roughly 20 kilometers (12 miles) high, churning through the Amazonis Planitia region of northern Mars. The HiRISE camera (High Resolution Imaging Science Experiment) captured the event on March 14, 2012. Scientists say that despite its height, the plume is just 70 meters (70 yards) wide.

Yikes! After seeing trucks thrown about by the tornadoes in Dallas yesterday, it makes you wonder how the MER rovers and even the Curiosity rover would fare in an encounter with a 20-km high twister.

Robot

A Robot With a Human Skeleton

ECCEROBOT
© BBCECCEROBOT, The First Anthropomimetic 'Bot.

Over at BBC, mathematician Marcus du Sautoy has examined what he's calling the world's first anthropomimetic robot--a robot that mimics in extremely high anatomical detail the movements and construction of the human body.

The robot, named ECCEROBOT, possesses artificial analogs of human bones, muscles, and tendons that endow it with human-like motions and--perhaps someday--will imbue it with human-like intelligence.

Captured for a BBC show titled "Horizon: The Hunt for AI" (it airs tonight at 9 p.m., for any of our across-the-pond readers who may be interested), ECCEROBOT--for Embodied Cognition in a Compliantly Engineered Robot--serves three purposes.

The first, of course, is to prove out the creation of a truly anthropomimetic robot. The second: figure out how to control it. But thirdly (and most interestingly), ECCEROBOT serves to explore how having a human-like physical form could influence human-like cognitive features.

Info

Secret Life of Plants: Scientists Discover Plants Can Talk

Talking plants
© Geffen Company Talking plants sounds like something from a science-fiction film, but WA researchers have discovered it's the real deal.

Plants that respond to sound and "click" to communicate with each other?

It's not science fiction, according to research released by the University of Western Australia.

"Everyone knows that plants react to light, and scientists also know that plants use volatile chemicals to communicate with each other: for instance, when danger - such as a herbivore - approaches," UWA researcher Monica Gagliano said.

"I was working one day in my herb garden and started to wonder if maybe plants were also sensitive to sounds - why not? - so I decided as a scientist to find out."

Dr Gagliano, along with professor Daniel Robert at the University of Bristol in the UK and professor Stefano Mancuso at the University of Florence in Italy, found that the roots of young plants emitted and reacted to particular sounds.

Bulb

The brain is wired in a 3D grid structure, landmark study finds

cerebral pathways
© Van J. Wedeen, et al./ScienceNeighborhood structure of cerebral pathways. A curved sheet of interwoven orthogonal pathways

The brain appears to be wired in a rectangular 3D grid structure, suggests a new brain imaging study funded by the National Institutes of Health.

"Far from being just a tangle of wires, the brain's white-matter connections turn out to be more like ribbon cables - folding 2D sheets of parallel neuronal fibers that cross paths at right angles, like the warp and weft of a fabric," explained Van Wedeen, M.D., of Massachusetts General Hospital (MGH), A.A. Martinos Center for Biomedical Imaging and the Harvard Medical School.

"This grid structure is continuous and consistent at all scales and across humans and other primate species."

Question

Dramatic Rise In US Twin Birthrates: Study

Twins
© redOrbit

One in every 30 babies born in the United States in 2009 was a twin, a dramatic increase from the one-in-53 babies born a twin in 1980, a new study finds.

Researchers attribute the rise in twin birth rates, in part, to the growing number of women having children at older ages, and the expanding availability of fertility treatments.

"Prior to 1980, the incidence of U.S. twin births was stable at about 2 percent of all births, but it has risen dramatically in the past three decades," said Barbara Luke, a researcher at Michigan State University's College of Human Medicine's Department of Obstetrics, Gynecology and Reproductive Biology.

While the increase in twin birth rates held true for mothers of all ages, the largest increase was seen among women aged 30 and older.

"Older maternal age accounts for about one-third of the rise, and two-thirds is due to the increased use of fertility treatments," including both assisted reproductive technologies and ovulation stimulation medications.

Meteor

Telescopes Team Up to Form 5,000-Mile-Wide Mega-Scope

Image
© SPDO/TDP/DRAO/Swinburne Astronomy ProductionsArtist's impression of the SKA dishes.
Radio telescopes in Australia and South Korea have linked up for the first time, forming a mega-instrument roughly 5,000 miles (8,000 kilometers) across.

The transcontinental scope should have roughly 100 times more resolving power than NASA's Hubble Space Telescope, researchers said. It continues Australia's astronomy partnership with Asia; the country has also made similar linkups with Japan and China over the years.

"This is another step in Australia's ongoing collaboration with Asia in the field of radio astronomy," Philip Diamond, astronomy chief at Australia's national science agency, known as CSIRO (Commonwealth Scientific and Industrial Research Organisation), said in a March 15 statement.

Five telescopes were involved in the new linkup. Three of them are Australian, two in the state of New South Wales and one near Hobart, in Tasmania. The two Korean scopes are in the capital, Seoul, and Ulsan, a city in the southeast of the country, researchers said. [The World's 10 Biggest Telescopes]

Comment: And there's this one: Global Network Of Telescopes Simulates 6,000-mile Wide Telescope


Sun

Rare Venus Transit of Sun Occurs in June

Mark your calendars! On June 5-6, a rare celestial event called a transit of Venus will take place, and it won't be repeated in your lifetime.

During the transit, Venus will pass directly in front of the sun from Earth's perspective, appearing as a small, slowly moving black dot. The last time this happened was in June 2004, but the next one won't take place until December 2117. This is the last chance for anyone alive today to see the rare celestial sight.
Image
© Imelda B. Joson and Edwin L. AguirreWatching the tiny silhouette of the planet Venus slowly cross the face of the sun doesn’t evoke the same drama and excitement as experiencing a total solar eclipse, but what makes a transit so unique is its rarity and historical significance.