Friday, February 28, 2014

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Beautiful Mouse Brain Map Holds Clues to Neurological Disease

Glowing new images of the mouse brain represent the most comprehensive mapping yet of the mammalian cortex. The project is important because the mouse brain is structured basically like other mammal brains — including humans', said study leader Hong-Wei Dong, a neuroscientist at the University of Southern California.


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Japan Launches Next-Generation NASA Satellite to Track Rain & Snow

NASA's newest weather satellite soared into space today (Feb. 27), kicking off a mission to observe rainfall and snowfall around the globe in unprecedented detail. The Global Precipitation Measurement (GPM) Core Observatory, a joint effort between NASA and the Japan Aerospace Exploration Agency (JAXA), blasted off aboard an H-2A rocket from Japan's Tanegashima Space Center today at 1:37 p.m. EST (1837 GMT; GPM will deliver near real-time observations of precipitation every three hours all over the world, greatly improving scientists' understanding of climate change and the global water cycle, mission officials said.  [NASA's Rain-Watching GPM Satellite Mission in Pictures (Gallery)] "This is going to provide us the most accurate and advanced precipitation measurements to date from NASA satellites," Gail Skofronick-Jackson, GPM project scientist at NASA's Goddard Space Flight Center in Greenbelt, Md., said during a press briefing last month.


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Humans May Have Been Stuck on Bering Strait for 10,000 Years

The ancestors of Native Americans may have lived on and around the Bering Strait for about 10,000 years before streaming into the Americas, researchers argue. In the new Perspectives article, published today (Feb. 27) in the journal Science, the researchers compile existing data to support the idea, known as the Beringia standstill hypothesis. Among that evidence is genetic data showing that founding populations of Native Americans diverged from their Asian ancestors more than 25,000 years ago. In addition, land in the region of the Bering Strait teemed with grasses to support big game (for food) and woody shrubs to burn in the cold climate, supporting a hard-scrabble existence for ancient people.


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Winds from Black Holes Pack Surprisingly Strong Punch

Black holes can blast their surroundings with much stronger winds than previously thought, scientists say. The discovery will help better model the evolution of black holes over time, and help uncover the huge influence they can have on their host galaxies. Black holes are objects with gravitational pulls so powerful, not even light can escape. Black holes grow when gas and dust in space flows or accretes onto them — this matter gets so hot it glows hot with radiation such as X-rays.


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Male Goat's 'Goaty' Pheromone Puts Females in the Mood

New research has identified a pheromone in the hair of male goats that activates a hormone in female goats called gonadotropin-releasing hormone, which stimulates their reproductive systems. This was our first surprise," study author Yukari Takeuchi, of the University of Tokyo, said in a statement. Researchers knew for a long time that in sheep and goats, the males somehow stimulated the release of reproductive hormones in females, but now the new study has identified the actual compound at work, said John J. McGlone, a Texas Tech University professor, who was not involved in the study. "When there is a pheromone in one species, what we are learning is that it often has effects on other species."

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Global warming slowdown likely to be brief: U.S., UK science bodies

By Alister Doyle, Environment Correspondent OSLO (Reuters) - A slowdown in the pace of global warming so far this century is likely to be only a pause in a longer-term trend of rising temperatures, the science academies of the United States and Britain said on Thursday. Since an exceptionally warm 1998, there has been "a short-term slowdown in the warming of Earth's surface," Britain's Royal Society and the U.S. National Academy of Sciences said in a report. But, they said, that "does not invalidate our understanding of long-term changes in global temperature arising from human-induced changes in greenhouse gases." The warming slowdown has emboldened those who question the evidence about climate change and ask whether a shift in investments towards renewable energies such as wind and solar power, advocated by many experts, is really needed. A build-up of greenhouse gases from human activities, mainly the burning of fossil fuels, is warming the atmosphere and the oceans, raising sea levels and melting Arctic ice, the report said, supporting the long-held view of a U.N. panel of climate scientists.

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How New Nutrition Labels Could Change Your Food

The U.S. government's proposed changes to nutrition labels are an important and positive step, and could even spur food companies to give consumers healthier options, but the changes are only part of what's needed to stem the obesity epidemic, public health experts say. Today (Feb. 27), the Food and Drug Administration announced plans to update nutrition labels to better reflect the latest nutrition science, and the growing understanding of the link between diet and chronic diseases, the agency said. The proposal comes as a growing number of Americans say they read nutrition labels. About 54 percent of U.S. consumers said they read these labels "often" in 2008, up from 44 percent in 2002, according to FDA statistics.

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NASA oversight led to spacewalker's near drowning, panel finds

By Irene Klotz CAPE CANAVERAL, Florida (Reuters) - A panel investigating an astronaut's near drowning during a spacewalk outside the International Space Station in July found that his spacesuit leaked during an earlier outing, officials said on Wednesday. NASA misdiagnosed the earlier leak, believing the water found in the helmet of Italian astronaut Luca Parmitano on July 9 was due to a ruptured drink bag, said space station chief engineer Chris Hansen, who chaired an investigation panel appointed by the U.S. space agency. Instead, a week later on July 16, Parmitano and NASA astronaut Chris Cassidy put on their spacesuits to continue work outside the space station, a $100 billion research complex that flies about 260 miles above Earth.


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Dressed for Success? Harvard Researcher Says You May Doing It Wrong

A recent study co-authored by Harvard University doctoral student Silvia Bellezza, suggested that people who go out on a limb with their clothing selections at work or in job interviews have the potential to appear more successful. Business News Daily recently reported on Bellezza's findings. Resistance to conformity pressures can take distinct forms across individuals. Of particular relevance to our work is Tian, Bearden and Hunter's (2001) conceptualization, which suggests that people exhibit three main behavioral manifestations of nonconformity.

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NASA Mars Probe Snaps Stunning Photo of Red Planet Sand Dunes

NASA'S Mars Reconnaissance Orbiter (MRO) spacecraft has sent over 200 terabits of data back to Earth. (1 terabit = 1000 gigabits.)


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Top Secret: Boeing Unveils Secure Smartphone That Can 'Self-Destruct'

Taking cues from "Mission Impossible," aerospace giant Boeing is developing a highly secure, self-destructing smartphone that can encrypt calls, protect stored information, or, if someone tries to tamper with or open the phone's casing, delete all of the device's data. The so-called Boeing Black is the Chicago-based company's first push into the realm of secure smartphones. Plans were filed this week with the Federal Communications Commission (FCC), but Boeing is releasing few details publicly about the device. The Boeing Black measures 5.2 inches (13 centimeters) tall, making it a bit larger and roughly 50 percent heavier than Apple's iPhone 5, reported the Wall Street Journal (WSJ).


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Stethoscopes More Contaminated Than Doctors' Hands

Stethoscopes tend to be more contaminated than the palms of physicians' hands, new research shows. In a recent Swiss study, researchers discovered that more bacteria cover a stethoscope's diaphragm (the part that's held against a patient's body) than all regions of a physician's hands, except the fingertips. There are no official guidelines that tell doctors how often they should clean their stethoscopes, the researchers said. "The more you have bacteria on the fingertips, the more you find bacteria on the membrane of the stethoscope," said study author Dr. Didier Pittet, director of infection control at the University of Geneva Hospitals.

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Experimental Psoriasis Treatment Shows Promise

The chronic skin condition psoriasis could be treated with a compound that targets a small piece of genetic material in cells, new research in animals suggests. Researchers found that blocking a type of genetic material called micro-RNA lowered the inflammation in mice that were grafted with skin from people with psoriasis. Psoriasis is an autoimmune disease (in which the immune system attacks the body's own tissues), and is one of the most common skin conditions worldwide, affecting about 3 percent of the human population. According to the National Psoriasis Foundation, the condition affects about 7.5 million Americans, including celebrities such as Kim Kardashian and country singer LeAnn Rimes.

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High-Tech Exosuit Lets Scientist Divers Explore Underwater Canyons

Remember that scene in "Aliens" where Sigourney Weaver's Ellen Ripley dons a Power Loader exoskeleton to do battle with the evil alien queen? Marine biologists and engineers have now developed a massive Exosuit weighing 530 lbs. (240 kilograms) designed for ocean depths down to 1,000 feet (305 meters) — another extreme environment where no one can hear you scream.  The one-of-a-kind Exosuit, on display at the American Museum of Natural History (AMNH) now through March 5, measures 6.5 feet (2 meters) tall and is made of hard metal and other materials.


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Juvenile Seal Returns to the Sea After Month in Rehab (Video)

BIDDEFORD, Maine — Bitterly-cold whipping winds and near-freezing water temperatures didn't slow this juvenile harp seal named "Snow" down as he chugged along the beach and back into the Gulf of Maine Wednesday (Feb. 26) after a month-long stay at nearby rehabilitation facilities. Members of the local nonprofit group Marine Mammals of Maine found the critically dehydrated young seal lying on a frozen marsh, and notified staff at the Marine Animal Rehabilitation Center (MARC) at the University of New England in Biddeford, Maine who took him in to be treated on Jan. 28. The animals stay at the center until they regain their strength, which can take anywhere from several weeks to several months depending on their health conditions, Shannon Prendiville, senior animal care technician at MARC, told Live Science.


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Medieval Candelabra Hints at Forgotten Sea Routes

A 10th-century candelabra found off the coast of the Spanish island of Ibiza may be a clue to long-forgotten shipping routes in that era.


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Thursday, February 27, 2014

FeedaMail: Science News Headlines - Yahoo! News

feedamail.com Science News Headlines - Yahoo! News

Population of Known Alien Planets Nearly Doubles as NASA Discovers 715 New Worlds

NASA's Kepler space telescope has discovered more than 700 new exoplanets, nearly doubling the current number of confirmed alien worlds. The Kepler space telescope is responsible for more than half of these finds, hauling in 961 exoplanets to date, with thousands more candidates awaiting confirmation by follow-up investigations. "This is the largest windfall of planets — not exoplanet candidates, mind you, but actually validated exoplanets — that's ever been announced at one time," Douglas Hudgins, exoplanet exploration program scientist at NASA's Astrophysics Division in Washington, told reporters today.[Gallery: A World of Kepler Planets] About 94 percent of the new alien worlds are smaller than Neptune, researchers said, further bolstering earlier Kepler observations that suggested the Milky Way galaxy abounds with rocky planets like Earth.


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Lights Out for North Korea: Space Photo Reveals Country's Isolation

A recent image from the International Space Station (ISS) shows in stark detail the utter lack of development in North Korea — widely considered to be an isolated "rogue" state — compared with next-door neighbor South Korea, a rapidly developing industrial power. "North Korea is almost completely dark compared to neighboring South Korea and China," according to the NASA Earth Observatory. Even so, "[t]he light emission from Pyongyang is equivalent to the smaller towns in South Korea," according to NASA. South Korea and its capital city, Seoul, by contrast, appear to blaze with light and color in the nighttime image, taken Jan. 30.


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Dads' Age Linked with Kids' Mental Health Problems

"I think this body of research should inform couples, doctors and the society at large about the pros and cons of delaying childbearing," said study researcher Brian D'Onofrio, an associate professor of psychology at Indiana University. "We are not saying that every child born to an older father is going to have these problems," D'Onofrio told Live Science.

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Scientists pinpoint exotic new particle called quantum droplet

By Will Dunham WASHINGTON (Reuters) - In the field of quantum physics, you could call this a droplet in the bucket. Physicists in Germany and the United States said on Wednesday they have discovered an exotic new type of particle that they call a quantum droplet, or dropleton. Writing in the journal Nature, they said it behaves a bit like a liquid droplet and described it as a quasiparticle - an amalgamation of smaller types of particles. The discovery, they added, could be useful in the development of nanotechnology, including the design of optoelectronic devices.


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NASA to use space images to help monitor California drought

By Laila Kearney SAN FRANCISCO (Reuters) - NASA scientists plan to use images shot from space and within the Earth's atmosphere to help California monitor one of the worst droughts in its recorded history, officials said on Tuesday. Scientists said they would deploy imaging tools to measure snowpack and groundwater levels and use a host of other technologies to help better map and assess the water resources in a state that produces half the nation's fruits and vegetables. "We're on the verge of being able to put all of these different kinds of instruments together, these measurements together, and start looking at the concept of perhaps closing the water budget of California," Tom Farr, a NASA Jet Propulsion Laboratory geologist, told reporters at a news conference. While much of the United States has experienced torrential rains and heavy snowfall this winter, California is in the midst of a drought threatening to inflict the biggest water crisis in its modern history.


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C-Sections May Boost Child's Risk of Obesity

Babies delivered by Caesarean section may be at increased risk of becoming obese later in life, a new study suggests. In the research, which included more than 38,000 people from 10 countries, the odds of being obese as an adult were 22 percent higher for those born by C-section, compared with those born by vaginal delivery. The new study is the largest to find a link between Caesarean delivery and weight in adulthood. "There are good reasons why C-section may be the best option for many mothers and their babies, and C-sections can on occasion be life-saving," study researcher Dr. Neena Modi, of Imperial College London, said in a statement.

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Baby's Rare Brain Tumor Had Teeth

A 4-month-old infant in Maryland may be the first person to have had teeth form in his brain as a result of a specific type of rare brain tumor, according to a new report of the case. After an analysis of tumor tissue, doctors determined the child had a craniopharyngioma, a rare brain tumor that can grow to be larger than a golf ball, but does not spread. Researchers had always suspected that these tumors form from the same cells involved in making teeth, but until now, doctors had never seen actual teeth in these tumors, said Dr. Narlin Beaty, a neurosurgeon at the University of Maryland Medical Center, who performed the boy's surgery along with his colleague, Dr. Edward Ahn, of Johns Hopkins Children's Center.  In a craniopharyngiomas, it's unheard of," Beaty said.


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Mummy Murder Mystery Solved: Incan Woman's Head Smashed

A mysterious mummy that languished in German collections for more than a century is that of an Incan woman killed by blunt-force trauma to the head, new research reveals. One was soon lost, but the other somehow made its way to the Bavarian State Archaeological Collection in Munich. Bombings and geographic moves destroyed any documentation of the mummy, so little was known about its origin, said study co-author Andreas Nerlich, a paleopathologist at Munich University. To learn more about the enigmatic remains, Nerlich and his colleagues put the mummy through a computed tomography (CT) scanner.


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Spacesuit Leak That Nearly Drowned Astronaut Could Have Been Avoided

A potentially deadly spacesuit water leak that nearly drowned an Italian astronaut during a spacewalk last July was one of the scariest close calls in NASA's spacewalk history. In fact, the spacesuit also leaked during an earlier spacewalk, but went undetected at the time, according to a NASA report released today (Feb. 26). The announcement came as NASA released the results of an investigation into the harrowing spacewalk on July 16, 2013, in which water flooded the spacesuit helmet of Italian astronaut Luca Parmitano, forcing NASA to abort the spacewalk to get him to safety. NASA officials didn't realize that the leak had also occurred at the end of a spacewalk one week earlier on July 9.


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U.S. space telescope spots 715 more planets

By Irene Klotz CAPE CANAVERAL, Florida (Reuters) - Scientists added a record 715 more planets to the list of known worlds beyond the solar system, boosting the overall tally to nearly 1,700, astronomers said on Wednesday. The additions include four planets about 2-1/2 times as big as Earth that are the right distance from their parent stars for liquid surface water, which is believed to be key for life. The discoveries were made with the National Aeronautics and Space Administration's planet-hunting Kepler space telescope before it was sidelined by a pointing system problem last year. The tally of planets announced at a NASA press conference on Wednesday boosted Kepler's confirmed planet count from 246 to 961.

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Vicious Cycle of Weight Gain, Inactivity Causes Obesity

Weight gain could be the result of snowball effect, new research shows, with a stint of inactivity leading to a few extra pounds, which then makes it harder to engage in physically activity. For example, mothers who stay home with young children today spend about 14 hours less per week doing physical activity than they did in 1965, the study found. A team of researchers at several universities conducted the new analyses, led by Dr. Edward Archer, exercise scientist and epidemiologist at the University of South Carolina and a research fellow at the University of Alabama. To avoid this problem of (frequently inaccurate) self-reporting, Archer's team applied a new set of equations to health data collected between 2005 and 2006, based on more-accurate measures of energy expenditure using activity monitors and urine analysis, the "gold standards" of physical activity studies.

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Having a Twin Linked with Anorexia, Puzzling Researchers

Being a twin or a triplet may increase a person's risk of developing anorexia, a new study from Sweden suggests. Children from multiple births(i.e., twins and triplets) were 33 percent more likely to be diagnosed with anorexia later in life compared to children from single births, the study found. The results surprised the researchers, said study researcher Anna Goodman, of the Centre for Health Equity Studies at Stockholm University. Usually, any health differences between children from multiple births and those from single births can be attributed to prematurity (because twins and triplets are often born at least slightly preterm), Goodman said.

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Polar Bears on Google Maps! Street View Comes to the Arctic

Google Street View has taken viewers to the Amazon, the Galapagos, and now, the Canadian Arctic — the home of polar bears. Starting today, on International Polar Bear Day (Feb. 27), people around the world will be able to see the bears in their natural habitat. The Google Maps team brought their cameras to Churchill and the surrounding tundra in October 2013, capturing 360-degree panoramas of polar bears out on the snow. "The Street View project lets viewers explore the tundra and see the polar bear migration, no matter where they live," said Krista Wright, executive director of the conservation nonprofit Polar Bears International (PBI).


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Second-hand Smoke Linked to Increased Risk of Miscarriage, Stillbirth

Women exposed to tobacco smoke for a long time may have an increased risk for miscarriage, experiencing stillbirth or a pregnancy outside the uterus, according to a new study. However, those within this group who were exposed to second-hand smoke for more than 10 years during childhood, or as an adult at home or at work, were 17 percent more likely to miscarry, 55 percent more likely to give birth to a stillborn child, and 61 percent more likely to have ectopic pregnancies, in which the embryo is implanted outside the uterus and cannot survive, compared with women who were never exposed to second-hand smoke. The findings "suggest that lifetime second-hand smoke exposure contributes to a great number of adverse pregnancy outcomes each year," the researchers wrote in their study published today (Feb. 26) in the journal Tobacco Control. The effects of cigarette smoking by pregnant women has been studied extensively in the past several decades, and is known to be associated with increased risk of infertility, preterm birth, miscarriage and stillbirth and other pregnancy complications, the researchers said.

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Arrgh! Adventures of 17th-Century Pirate Alliance Uncovered in Ireland

An alliance of pirates preyed on ships laden with treasure, outmatched Britain's Royal Navy, elected their own admiral and, ultimately, were destroyed in a cataclysmic battle against a Dutch fleet in 1614. They were a pirate alliance which operated on the southwest coast of Munster, Ireland, in the early 17th century, and now new archaeological and historical research reveals new details about their adventures.  One of them, located at modern-day "Dutchman's Cove," east of Baltimore, Ireland, held niches where candles or lanterns were used to signal pirates and smugglers who came in the dead of night. Connie Kelleher, the underwater archaeologist who explored them, said she is not sure if they date back to the early 17th century.


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Japan to Launch US Satellite to Map Earth's Rain & Snow Today: Watch It Live

Japan is preparing to launch a U.S.-built satellite Thursday (Feb. 27) to track rainfall and snowfall over the bulk of the world's population, anchoring an international initiative to better understand Earth's water cycle and its relationship to storms, droughts and climate change. The Global Precipitation Measurement Core Observatory is set for liftoff in a two-hour launch window opening at 1837 GMT (1:37 p.m. EST) aboard a Japanese H-2A rocket from the Tanegashima Space Center in southern Japan. The launch window begins at 3:37 a.m. Japan Standard Time on Friday. You can watch the launch live on Spaceflight Now via the Mission Status Center.


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Giant Black Holes May Stall Star Birth in 'Red and Dead' Galaxies

Supermassive black holes could be quenching star formation in elliptical galaxies, forcing them to appear "red and dead," a new study reports. Some big ellipticals do indeed harbor large amounts of cold gas — but these reservoirs likely get heated up or driven off by powerful jets of material blasted out by supermassive black holes, which lurk at the heart of most if not all galaxies. "These galaxies are red, but with the giant black holes pumping in their hearts, they are definitely not dead," study lead author Norbert Werner, of Stanford University, said in a statement. Werner and his colleagues studied eight giant elliptical galaxies using the European Space Agency's Herschel Space Observatory.


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5 Weird Facts About Polar Bears

Today is International Polar Bear Day, which celebrates everyone's favorite furry beasts of the Arctic. The largest polar bear ever recorded was a male weighing 2,209 pounds (1,000 kg), according to Polar Bear International. If a polar bear doesn't eat for seven to 10 days, it can slow its metabolism until it finds its next meal. Although polar bears appear white, their fur is actually transparent.


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Mysterious Flashing 'Earthquake Lights' Maybe Explained

Mysterious flashes of lightning sometimes herald earthquakes, and now scientists may have discovered why: Shifting grains surrounding faults in the Earth may generate an electric charge. This strange flickering, known as earthquake lights, can occur before or during quakes. However, lab experiments now suggest earthquake lights may instead originate from the buildup of electrical charge in the ground surrounding geological faults. Applied physicist Troy Shinbrot, of Rutgers University in New Jersey, and his colleagues looked at three different kinds of particles — plastic disks, glass particles and organic powders, such as flour — that stick and slip in much the same way the Earth does in earthquake zones.


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New Nutrition Labels: 5 Big Changes to Look for

The nutrition labels on packaged foods will likely get a makeover in the coming years, according to the Food and Drug Administration. Today (Feb. 27) the agency announced proposed changes to the labels, to reflect the latest nutrition science and the growing understanding of the link between our diet and chronic diseases such as obesity and heart disease, the FDA said. One of the biggest changes the FDA is proposing is to update the serving sizes on the labels, so they better reflect what people actually eat, the FDA said. For example, a single serving of ice cream is currently listed as half a cup, but the new labels would list the serving size as a full cup, the FDA said.

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Tiny Crystal Defects Help Drive Plate Tectonics

Inside most of the Earth, olivine is a hot mineral whose creepy behavior drives plate tectonics. In the upper mantle — the top of the planetary layer between the crust and core — olivine's unusual behavior presents a paradox. These solid crystals must change shape for plate tectonics to work, oozing like toothpaste over long time scales. According to models, Earth's mantle flows in such a way that there should be three independent directions of movement for olivine crystals.


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Ancient Gladiator School Discovered in Austria

An ancient Roman gladiator school has been discovered in Austria, complete with cell blocks, a training arena and a bath complex, archaeologists say. The buried remains of the school — at the site of Carnuntum, near Vienna, which thrived some 1,700 years ago — were detected not through excavations but through remote-sensing techniques. Archaeologists have been studying Carnuntum, which is on the south bank of the River Danube, for more than 100 years. The researchers, led by archaeologist Wolfgang Neubauer of the University of Vienna, say this arena would have been surrounded by wooden spectator stands set on stone foundations, which were clearly visible in the ground-penetrating radar data.


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Pockets of Oil from Exxon Valdez Spill Persist Along Alaskan Coast

Small pockets of oil from the 1989 Exxon Valdez oil spill still persist in pockets along Alaska's coasts, hidden by rocks that have kept the elements from breaking down the crude oil, scientists reported yesterday (Feb. 27). The Exxon Valdez spill was the largest oil spill in U.S. history until 2010's Deepwater Horizon disaster, with nearly 11 million gallons (40 million liters) of oil pouring into Prince William Sound. "To have oil there after 23 years is remarkable," Gail Irvine of the U.S. Geological Survey's Alaska Science Center said in a statement. Oil drilled from different locations has different chemical fingerprints, and chemists were able to test the unweathered oil and confirm that it came from the Exxon Valdez, which was carrying oil from Alaska's Prudhoe Bay.


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