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Friday, January 24, 2014

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Midwest Earthquake Risk Still Looms

After wreaking havoc 200 years ago with huge earthquakes that made the Mississippi River flow backwards, the New Madrid Seismic Zone has continued to rattle the Midwest with about 200 quakes every year. A new study suggests recent reports of the "death" of the New Madrid Seismic Zone were premature. Based on statistical computer models, which predict how many aftershocks from the 19th century quakes should hit the region, U.S. Geological Survey (USGS) scientists think the past two centuries of earthquakes suggest the New Madrid Seismic Zone is popping more often than expected. Instead of slowing down, earthquake activity on the Reelfoot Fault continues at a sprightly pace. The New Madrid Seismic Zone is a series of ancient faults cutting the Midwest and now hidden beneath the Mississippi River's thick mud.

LA Earthquakes Could Be Amplified, Models Show

Virtual earthquakes predict greater shaking in the seismically precarious city of Los Angeles than in nearby areas, a new computer modeling study suggests. Shaking in the Los Angeles Basin could be three times larger on average than in the city's surroundings, the models show. These virtual quakes could also predict the risks looming over many other cities across the world, especially those in locations with no recent history of large earthquakes. Los Angeles and other cities sit on top of large sedimentary basins.

Frogs' 'Love Ripples' Bring Death from Above

But new research finds that their love songs have a dark side: They create ripples that attract the attention of frog-eating bats. "Animals have all kinds of sensory systems that they can use in very different ways, and they can combine their senses," said study leader Wouter Halfwerk, a postdoctoral researcher at the University of Texas, Austin.

Ancient Mars May Have Been Habitable for Hundreds of Millions of Years

Mars may have once been capable of supporting microbial life for hundreds of millions of years in the distant past, new findings from a long-lived Red Planet rover suggest. NASA's Opportunity rover, which celebrates 10 years of Mars exploration on Friday (Jan. 24), has uncovered evidence that benign, nearly neutral-pH water flowed on the Red Planet around 4 billion years ago. These results, reported today (Jan. 23) in the journal Science, complement the recent work of NASA's bigger, newer Curiosity rover, which discovered a potentially habitable lake and groundwater system in a different Martian locale dating from about 3.7 billion years ago. "These [benign] water conditions existed over a long period of time," said Ray Arvidson, lead author of the new study and Opportunity deputy principal investigator.

World's Oldest Cancer Arose in a Dog 11,000 Years Ago

But one cancer outlived the dog in which it emerged by spreading its abnormal cells on to other dogs during mating. Now, researchers have named this sexually transmitted canine cancer the oldest known line of cancer cells, at 11,000 years old. Canine transmissible venereal tumor (CTVT) is one of only two known diseases in which cancerous cells from one animal infect another. "The cancer cells in all the dogs around the world today are derived from the original dog," said Elizabeth Murchison, a study researcher and cancer geneticist at the Wellcome Trust Sanger Institute and the University of Cambridge, both in the United Kingdom.

Fever Treatments May Cause More Flu Deaths

People sick with the flu often take medication to alleviate the accompanying fever. But their relief may come at a price for others: New findings suggest that suppressing fever can result in the infection of tens of thousands of additional people each flu season. The condition can lower the amounts of virus in a sick person's body, because viruses replicate less efficiently in higher temperatures. They found that in a typical flu season, fever-reducing drugs such as ibuprofen and acetaminophen may lead to tens of thousands of additional influenza cases, along with more than a thousand deaths attributable to influenza, across North America.

First-Time C-Sections Declining in Many US States

The report is based on data about primary cesarean deliveries from places where this information is recorded on birth certificates, including 28 states and New York City. Email Bahar Gholipour or follow her @alterwired.

Rare Disease Linked to Dengue Virus Caused Texas Woman's Death

A woman in Texas who died in 2012 succumbed to a rare blood cell disease, which was caused by the mosquito-borne dengue virus infection, according to a report of her case published today. The case shows that while dengue remains rare in the United States, vigilance for the disease is important, and health professionals should be aware of the complications the virus can cause. The woman died after her dengue infection brought on another condition called hemophagocytic lymphohistiocytosis (HLH), in which white blood cells build up in the skin, spleen and liver, and destroy other blood cells. HLH is most frequently associated with Epstein Barr virus infection, but also has been linked to dengue, according to the researchers, from the Centers for Disease Control and Prevention.

NASA Launches Next-Generation Relay Satellite Into Orbit

NASA's newest communications satellite blasted into space tonight (Jan. 23), beefing up the network that links ground controllers to the International Space Station and Earth-orbiting research observatories. TDRS-L is the latest addition to NASA's Tracking and Data Relay Satellite network, which enables the nearly continuous transmission of information between mission control and a variety of orbiting research and exploration spacecraft. "The TDRS constellation brings back all of the data and video that we see every day from the International Space Station," NASA launch director Tim Dunn said in a statement. "TDRS also supports all of the data from the Hubble Space Telescope and all of our low-Earth orbit NASA science missions."

Rocket blasts off with NASA communications satellite

By Irene Klotz CAPE CANAVERAL, Florida (Reuters) - An unmanned rocket blasted off from Cape Canaveral Air Force Station on Thursday to put the newest member of NASA's space communications network into orbit. The 19-story tall Atlas 5 rocket, built and launched by United Launch Alliance, a partnership of Lockheed Martin Corp and Boeing Co, lifted off at 9:33 p.m. EST (0233 GMT Friday). With the 3.8-ton (3,447-kg) Boeing-built Tracking and Data Relay Satellite perched on its nose, the rocket blazed through clear, star-filled skies as it headed southeast over the Atlantic Ocean toward orbit. The satellite, called TDRS, is the 12th built for a NASA constellation that circles more than 22,300 miles above Earth.

NASA rover Opportunity finds signs Mars once had fresh water

NASA's decade-old Mars rover, Opportunity, has found evidence that life-friendly fresh water once pooled on the red planet's surface, reinforcing similar discoveries made by newcomer Curiosity on the other side of the planet, scientists said on Thursday. Opportunity, along with its now-defunct twin, Spirit, landed 10 years ago for concurrent 90-day missions to look for clues of the past existence of water. In August 2012, Curiosity, equipped with an onboard chemistry lab, arrived for follow-up investigations to determine if Mars had other ingredients essential for supporting life. On the other side of the planet, meanwhile, Opportunity has been analyzing water-bearing rocks at the rim of an ancient impact crater called Endeavour.

British scientists seek go-ahead for GM 'Omega-3' crop trial

By Kate Kelland LONDON (Reuters) - British scientists have applied for permission to run an open-air field trial of a genetically modified (GM) crop they hope may one day become a sustainable and environmentally friendly source of healthy Omega-3 fats. The proposed trial - likely to generate controversy in a nation where GM foods have little public support - could start as early as May and will use Camelina plants engineered to produce seeds high in Omega-3 long chain fatty acids. No GM crops are currently grown commercially in Britain and only two - a pest-resistant type of maize and a potato with enhanced starch content - are licensed for cultivation in the European Union (EU). But scientists at Britain's agricultural lab Rothamsted Research have developed Camelina plants to produce Omega-3 fats that are known to be beneficial to health but normally found only in oils in increasingly limited fish stocks.

British scientists seek go-ahead for GM 'Omega-3' crop trial

Artificial Bone Marrow Could Be Used to Treat Leukemia

For decades, doctors have been treating leukemia patients by transplanting stem cells from people with healthy bone marrow. Now, researchers are taking the first steps toward making bone marrow in a lab: They are growing stem cells in a setting that mimics the natural environment of bone marrow. The researchers' goal is to create artificial bone marrow that is capable of growing blood stem cells outside the body, said study researcher Cornelia Lee-Thedieck, of the Karlsruhe Institute of Technology (KIT) in Germany. Such stem cells could then be used to treat leukemia patients.

Mars Rover Photos as Art: Red Planet Wonders Star in Smithsonian Exhibit

Science meets Martian art in a new exhibition celebrating 10 years of Mars exploration by NASA's twin rovers Spirit and Opportuntiy. The "Spirit and Opportunity: 10 Years Roving Across Mars" gallery at the Smithsonian Institution's National Air and Space Museum in Washington, D.C., puts otherworldly images captured by the Spirit and Opportunity rovers (the Mars Exploration Rovers) on vivid display as artwork. SPACE.com visited the exhibit this month as NASA celebrated the 10th anniversary of the rovers' 2004 landing on Mars. Exhibit curator John Grant, a Mars Exploration Rover science team member, sees the gallery as a way to show the public the beauty of Mars and detail some of the science Spirit and Opportunity have done while exploring the Martian surface.

New Supernova in Night Sky Captivates Amateur Astronomers (Photos)

At 12 million light-years away, a new supernova that suddenly appeared in a nearby galaxy this week is the closest star explosion to be spotted from Earth in at least 20 years, so it's no surprise that it has captured the attention of stargazers. Professional astronomers and amateurs skywatchers alike have rushed to their telescopes to capture images of the brilliant star explosion, which was discovered by students at the University College London. So far, astrophotographers from Puerto Rico to Arizona have sent SPACE.com stunning photos of the new supernova in the galaxy M82. Adam Block sent in a photo of M82's newest bright spot as seen on Jan. 23, 2014 from the 32-inch Schulman telescope at the University of Arizona's Mount Lemmon SkyCenter using a ).

Stethoscopes Could Become Extinct, Doctors Say

The image of a doctor with a stethoscope hanging around the neck may seem iconic, but in fact, this image may not last much longer, as hand-held ultrasound devices are predicted to replace 200-year-old stethoscopes in near future, doctors say. "With ultrasound devices, one can not only look at the heart, but all of the organs in the body," said Dr. Jagat Narula, professor of cardiology at Mount Sinai School of Medicine and one of the authors of the editorial. The ability to get a better look inside the body could prevent misdiagnoses, and help doctors detect abnormalities that need to be followed up with other tests. "As a matter of fact, stethoscope is a misnomer," Narula said.

Trailblazing Mars Rover Celebrates 10 Years on Red Planet

NASA's Opportunity rover marks 10 years of Mars exploration today (Jan. 24), an extraordinary milestone that adds to the robot's growing legend. Though both robots were originally tasked with 90-day missions, Spirit explored the Red Planet until 2010 and Opportunity keeps rolling along to this day, gathering more and more clues about Mars' warmer and wetter past. "It's a well-made American vehicle," Spirit and Opportunity deputy principal investigator Ray Arvidson, of Washington University in St. Louis, told reporters Thursday (Jan. 23) when asked to explain Opportunity's amazing longevity. Still, Opportunity's continued productivity at such an advanced age has surprised the mission team.

River Roulette: Randomness Controls Erosion

Because geoscientists rely on river erosion to track both mountain-building and the warming and cooling of Earth's atmosphere, the discovery means researchers may need to rethink how they calibrate their river clocks. "River incision is the yardstick we use to measure a lot of processes," said Noah Finnegan, lead study author and a geomorphologist at the University of California, Santa Cruz. If the mountains were growing at the same time the river cut down, then geologists can start to estimate what's called an uplift rate — how fast mountains grow — by assuming that river erosion keeps pace with the rising range. But Finnegan, who studies the evolution of Earth's surfaces through time, wondered what would have happened if erosion had started and stopped over the millennia.

Polar Bears Hunt on Land as Ice Shrinks

Polar bears have shifted to a diet of more land-based food in response to climate change and melting sea ice in the Arctic, new research finds. The results suggest that polar bears, at least in the western Hudson Bay area, may be slightly more flexible in the face of climate change than previously thought. "We found they were eating more of what is available on the land," including snow geese, eggs and caribou, said study co-author Linda Gormezano, a vertebrate biologist at the American Museum of Natural History in New York. Still, it's not clear that this foraging strategy can offset the negative impacts of climate change, with one scientist saying it is unlikely to make a difference for polar bear numbers.

Squarks & Neutralinos Lurk in the Universe, Physicist Says

LONDON — Squarks, selectrons and neutralinos may be lurking in the universe, say physicists who suggest supersymmetry — the idea that every known particle has a yet-to-be-discovered sister particle — is not dead, despite the lack of evidence found in its favor. The world's most powerful atom smasher, the Large Hadron Collider (LHC), has yet to find evidence of the existence of such sparticles (supersymmetric particles), though perhaps physicists are not interpreting the data in the right way, said particle theorist Ben Allanach of Cambridge University. Speaking here at the Royal Society conference "Before, behind and beyond the discovery of the Higgs Boson" on Tuesday (Jan. 21), Allanach proposed that the LHC might detect the elusive supersymmetric particles once it is up and running again next year with much higher energies. The first run of the LHC at 7 TeV culminated with the successful detection of what is widely believed to be the Higgs boson, a particle thought to explain how other particles get their mass.

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Thursday, January 23, 2014

FeedaMail: Science News Headlines - Yahoo! News

Science News Headlines - Yahoo! News

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Cold Air Could Help You Lose Weight

New evidence suggests that regular exposure to mildly cold air may help people lose weight by increasing the amount of energy their bodies have to expend to keep their core temperature up, researchers say. In fact, being able to control the ambient temperature might be partly responsible for the rise in obesity rates in industrial societies, said researchers from the Netherlands in a study published today (Jan. 22) in the journal Trends in Endocrinology & Metabolism. "Since most of us are exposed to indoor conditions 90 percent of the time, it is worth exploring health aspects of ambient temperatures," said study researcher Wouter van Marken Lichtenbelt of Maastricht University Medical Center. "What would it mean if we let our bodies work again to control body temperature?"

Scotland Surprisingly Had Glaciers 400 Years Ago

The last glacier in Scotland may have melted only 400 years ago, not 11,500 years as previously believed, new research finds. The Cairngorm Mountains of eastern Scotland are the snowiest part of the Scottish Highlands even today. "Conventional wisdom is that's when Scotland had its last glaciers," said study researcher Martin Kirkbride, a senior lecturer at the University of Dundee. Kirkbride discovered Scotland's last glacier inadvertently while doing fieldwork with undergraduate students in the Cairngorms.

Bare Mount Shasta Reveals California Drought Severity

Images of a nearly bare Mount Shasta taken from space reveal the severity of the California drought. The volcanic peak, normally blanketed in snow this time of year, has almost no snow cover on the south, west and eastern slopes. Snow cover has decreased dramatically since November, when the mountaintop looked mostly white, NASA's Earth Observatory reported. Normally, snow cover peaks around April 1, and by the first of the year, 15 to 30 percent of that snow has already accumulated.

Around the World: Atlantic Warming Melts Antarctic Ice

Though physically about as distant from Antarctica as you can get, water masses in the North and Tropical Atlantic Ocean significantly influence the effects of climate change on the icy southernmost continent, new research suggests. Antarctic climate has changed considerably over the past several decades, with the Antarctic Peninsula — located on the West Antarctic Ice Sheet — experiencing more warming than any other region on Earth. Researchers have long recognized that atmospheric and oceanographic conditions, such as wind speed and direction, in the southern Pacific Ocean play an important role in the climate of Antarctica and the distribution of its ice. But Pacific conditions cannot entirely explain all the changes currently occurring in and around Antarctica, particularly during the austral (Southern Hemisphere) winter.

Number of Kids with Autism May Drop Under New Criteria

The number of U.S. children estimated to have autism could decline as a result of new criteria to diagnose the condition, a new study suggests. The findings show that 81 percent of children in the study diagnosed with autism under the old criteria would still be classified as having the condition under the new criteria, which were released last year in the new edition of the psychiatric handbook called the DSM-5. The new findings should be reassuring to parents, said Dr. Andrew Adesman, chief of developmental and behavioral pediatrics at Steven and Alexandra Cohen Children's Medical Center of New York, who was not involved in the study. "The overwhelming majority of children" who met the old criteria will continue to meet the new ones, Adesman told LiveScience.

Electrical Burn Causes Man's Star-Shaped Cataract

A 42-year old electrician in California developed star-shaped cataracts in his eyes after a serious work-related accident caused electricity to run through his body, according to a new report of the case. The man's left shoulder came into contact with 14,000 volts of electricity, and an electric current passed through his entire body, including the optic nerve — the nerve that connects the back of the eye to the brain. "The optic nerve is similar to any wire that conducts electricity," said Dr. Bobby Korn, an associate professor of clinical ophthalmology at the University of California, San Diego, who treated the patient. "In this case, the extreme current and voltage that passed through this important natural wire caused damage to the optic nerve itself," Korn said.

Texting Makes You Walk Like a Clumsy Robot

Texting makes people walk funny, which could make them more prone to accidents, new research suggests. When texting, walkers change their posture to keep their upper body fairly rigid in order to keep the screen in their field of view, a new study published today (Jan. 22) in the journal PLOS ONE reveals. "Obviously deviating from a straight line is very bad if you're walking close to traffic," said study co-author Siobhan Schabrun, a physical therapy researcher at the University of Western Sydney in Australia.

Water vapor plumes raise question about life on dwarf planet Ceres

By Will Dunham WASHINGTON (Reuters) - The dwarf planet Ceres, one of the most intriguing objects in the solar system, is gushing water vapor from its unusual ice-covered surface, scientists said on Wednesday in a finding that raises the question of whether it might be hospitable to life. Using the European Space Agency's Herschel infrared space telescope, researchers spotted plumes of water vapor periodically spewing from Ceres, the largest object in the asteroid belt residing between the orbits of Mars and Jupiter. The discovery comes just over a year before the scheduled arrival of NASA's Dawn spacecraft for a closer look at Ceres, a round body measuring about 590 miles in diameter - less than a third of the size of the moon. "This is the first time water vapor has been unequivocally detected on Ceres or any other object in the asteroid belt and provides proof that Ceres has an icy surface and an atmosphere," Michael Küppers of the European Space Agency in Spain, who led the research published in the journal Nature, said in a statement.

Flies with brothers make gentler lovers

The study found that unrelated male flies compete more fiercely for female attention than related flies, pestering them more often for sex and leaving them little time to sleep or eat. "Brothers don't need to compete so much with each other for female attention since their genes will get passed on if their sibling mates successfully anyway," said Dr Tommaso Pizzari of Oxford University's zoology department, who led the study.

Sound Waves Make Droplets Dance in Midair

A team of researchers demonstrated experimentally how to lift and spin liquid droplets, controlling them with high-frequency sound waves. "Even nylon and Teflon have been shown to contaminate biological tests."

Exploding Star: New Supernova Discovery Is Closest in Years

An exploding star has suddenly appeared in the night sky, dazzling astronomers who haven't seen a new supernova so close to our solar system in more than 20 years. In just the last few days, a the supernova emerged as a bright light in Messier 82 - also known as the Cigar Galaxy - about 12 million light-years away in the constellation Ursa Major, or the Great Bear. The supernova, which one astronomer described as a potential "Holy Grail" for scientists, was first discovered by students at the University College London. Positioned between the Big Dipper and the Little Dipper, the new supernova should be easy for skywatchers in the Northern Hemisphere to spot;

Mock Mars Mission: Farewell to a Simulated Red Planet

Editor's Note: In the Utah desert, scientists are attempting to recreate what a real-life mission to Mars might be like, and SPACE.com contributor Elizabeth Howell is along for the ride. HANKSVILLE, Utah — Early on in my two-week Mars Desert Research Station mission, I was hiking a hill steeper than I had ever faced. Crew 133 executive officer Gordon Gartrelle coaxed me up, a process that included teaching me the meaning of the word "commit" in hiking.

Sci-Fi Spaceship Helps Launch NYC Art Museum Exhibit

The simulated spaceship forms part of the "Museum as Hub: Report on the Construction of a Spaceship Module" exhibit at the New Museum here, and is made up of images of space shuttles taken from Eastern European science fiction movies dating back to the Cold War era. The exhibit as a whole explores the ideological role that outer space played during that time period in socialist Europe, New Museum representatives said in a statement.

NASA to Launch Next-Generation Relay Satellite Today: Watch It Live

CAPE CANAVERAL, Fla. — A fresh satellite for NASA's communications network is set for launch from Florida's Space Coast on Thursday (Jan. 23) to bolster voice and data links between mission control, the International Space Station and a fleet of orbiting research observatories. You can watch the NASA launch live online here beginning at 6:30 p.m. EST (2330 GMT), courtesy of NASA. Built by Boeing Co., the satellite will be the 12th craft launched in NASA's Tracking and Data Relay Satellite program, which started linking mission control with space shuttles in the 1980s. Now that the space shuttle is retired, the TDRS network's primary customers are the space station, the Hubble Space Telescope and U.S. government Earth-observation satellites.

No More Eye Drops? Contact Lens Protoype Delivers Glaucoma Meds

Like a miniature donut stuffed inside a tiny pita pocket, a common glaucoma medicine is sandwiched inside this specially designed contact lens. Its construction offers numerous potential clinical advantages over the standard glaucoma treatment and may have additional applications, such as delivering anti-inflammatory drugs or antibiotics to the eye. This vision loss can be reduced if glaucoma is found and treated early, most commonly with eye drops to lower pressure within the eye. People using traditional eye drops for glaucoma "aren't getting any symptomatic relief, and they're not seeing better, so there's not a lot of motivation to be compliant with the medication," said Joseph Ciolino, an ophthalmologist who, along with his mentor Daniel Kohane, developed the new contact lens at Harvard Medical School.

Sea Anemones Found Clinging to Underside of Antarctic Ice

A robot surveying the underside of Antarctica's Ross Ice Shelf has made a startling discovery: Clinging upside-down from crannies in the ice shelf with their tentacles dangling into the icy water were thousands and thousands of tiny sea anemones. Other anemones have been found in Antarctica, but these are the first reported to live in the ice. "When the robot got down, the engineers noticed the ice looked kind of fuzzy, and when it drifted up to take a look they saw anemones, and knew it was really something special," said Frank Rack, science leader of the Antarctic Geological Drilling Program at the University of Nebraska-Lincoln. Other groups have drilled through Antarctic ice shelves before, he said, "but nobody looked up." [Gallery: Unique Life at Antarctic Deep-Sea Vents]

Rare Borneo Bay Cat Captured in Stunning Photo

An extremely elusive creature called a bay cat has been photographed in stunning detail in its native Borneo in Southeast Asia. The bay cat, or Pardofelis badia, is a mysterious little wildcat that lives only on the island of Borneo, which includes the countries of Malaysia, Brunei and Indonesia. Logging has threatened some of these cats' tropical forest habitats, and the creature is now listed as endangered by the International Union for Conservation of Nature. In the past, the elusive cats were only documented in poor-resolution camera-trap images first captured in 1998.

See the Moon Dance with Planets, Stars This Week

You should see a bright star, Spica, just below it, and a reddish object above and to its left. Currently Mars is just slightly brighter than Spica, half a magnitude brighter on the astronomer's brightness scale.

Rocket Renovations Will End Public Tours of NASA's Vehicle Assembly Building

A hugely popular, hugely historic and just plain huge NASA tour spot is closing to the public as the space agency picks up the pace preparing the facility for the future of U.S. space exploration. Tours taking the public into the 52-story Vehicle Assembly Building (VAB) at the Kennedy Space Center in Florida are set to end on Feb. 11, the Kennedy Space Center Visitor Complex announced recently. Public access to the voluminous facility is being halted as work resumes to renovate the VAB for the Space Launch System (SLS), NASA's next-generation heavy-lift rocket. The towering launch vehicle will provide NASA with a new capability for human exploration beyond Earth orbit.

Ancient Church Mosaic With Symbol of Jesus Uncovered in Israel

Archaeologists in Israel have uncovered intricate mosaics on the floor of a 1,500-year-old Byzantine church, including one that bears a Christogram surrounded by birds. The ruins were discovered during a salvage excavation ahead of a construction project in Aluma, a village about 30 miles (50 kilometers) south of Tel Aviv, the Israel Antiquities Authority (IAA) announced Wednesday (Jan. 22). Excavator Davida Eisenberg Degen said the team used an industrial digger to probe a mound at the site, and through a 10-foot (3 meters) hole, they could see the white tiles of an ancient mosaic. The basilica was part of a local Byzantine settlement, but the archaeologists suspect it also served as a center of Christian worship for neighboring communities because it was next to the main road running between the ancient seaport city of Ashkelon in the west and Beit Guvrin and Jerusalem in the east.

2013 Was Record Year for Rhino Poaching in South Africa

The number of rhinos illegally slaughtered in South Africa reached an all-time high in 2013, with an average of three rhinos killed each day, according to new figures released this month by the South African Department of Environmental Affairs. Kruger National Park, which is home to South Africa's largest population of black rhinos and white rhinos, was hardest hit, with poachers killing 606 rhinos within the famous safari destination last year. Black rhinos are considered "critically endangered" by the International Union for Conservation of Nature (IUCN), and wildlife experts estimate that only 4,240 black rhinos remain in the wild. White rhinos are classified as "near-threatened," and there are an estimated 20,150 white rhinos in the wild, according to the IUCN.

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