Friday, August 7, 2015

FeedaMail: Science News Headlines - Yahoo! News

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Yawn! School Starts Too Early for Teens, CDC Says

School start times that are too early can contribute to lack of sleep among teens, most of whom don't get the recommended 8.5 to 9.5 hours of shut-eye, the report said. In 2014, the American Academy of Pediatrics (AAP) recommended that middle and high schools start no earlier than 8:30 a.m. "Getting enough sleep is important for students' health, safety, and academic performance," Anne Wheaton, an epidemiologist in CDC's Division of Population Health and co-author of the agency's new report, said in a statement.

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Simple Chemical Stops Prion Disease

Mad cow, scrapie and Creutzfeld-Jakob disease are all diseases of the brain that debilitate before they kill, and have no cure, or even many good treatment options beyond supportive care. Prions are a distinct type of protein — they can self-replicate, said Adriano Aguzzi, professor of neuropathology at the University of Zurich, who led the study. When a prion comes into contact with a normal protein, it makes the normal protein alter its shape, and become a prion, too.


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Stress May Sabotage Diet Willpower

In that tough decision about whether to snack on an apple or a donut, stress may be a deciding factor, according to a new study. The study found that a moderate amount of stress can weaken a person's willpower to choose healthier food when making food decisions. Researchers in Switzerland asked people to choose a food to eat, after the individuals had experienced moderate stress.

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How to Set High Goals Without Burning Out, According to Science

Researchers analyzed 43 studies on perfectionism and burnout, and found that holding high expectations — whether for academic achievements, career goals or athletic pursuits — isn't necessarily a bad thing. It is this aspect of perfectionism that leads to burnout, said study co-author Andrew Hill, a sports psychologist at York St. John University in England. "You can fail as many times as you like, as long as you don't feel like that reflects on your self-worth," Hill said.

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Q&A: A look at the science on Hawaii's Mauna Kea

HONOLULU (AP) — Atop Hawaii's Mauna Kea, where some Native Hawaiians have been peacefully protesting the construction of what would be one of the world's largest telescopes, astronomers have spent the last 40 years observing our universe and helping make some of the most significant discoveries in their field.


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JetHawks Baseball Team Honoring Astronaut with Bobblehead

Astronaut Jerry Ross, who shares the world record for the most missions into outer space, has been decorated with military and NASA medals, enshrined into a hall of fame and awarded an honorary doctorate. For Jerry Ross is about to be immortalized as a bobblehead. The honor comes from the Lancaster JetHawks, the Minor League Baseball team located in southern California near Edwards Air Force Base, NASA's Neil A. Armstrong Flight Research Center and the Mojave Air and Space Port.


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Walking Dead: How Wasp Overlords Control Spider Zombies

The manipulative relationship between the wasp and the spider begins when a female wasp attacks the orb weaver in its web. Firmly attached to the spider, the egg develops into a larva, which eventually does kill its host, but not before the spider serves it as a slave throughout the early stages of development, said Keizo Takasuka, a postdoctoral fellow at Kobe University's Graduate School of Agricultural Science in Japan and lead author of a new study exploring the relationship between R. nielseni and the orb weaver. Over the past several years, Takasuka has headed to the Shinto shrines of Hyogo prefecture to collect spiders enslaved by the parasitic larvae of R. nielseni.


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3D-Printed Spy Drones Could Be Built at Sea

A 3D-printed drone was recently launched from a British military warship and successfully flew to shore, a demonstration that could pave the way for futuristic spy drones that can be printed at sea. Engineers at the University of Southampton, in the United Kingdom, built the unmanned aircraft using 3D printing, which has been used to create everything from pelvic implants to a prosthetic tortoise shell. The drone was launched off the front of the Royal Navy warship HMS Mersey.


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New Breast Pump Could Offer More Freedom for Busy Moms

It's the first week of August, and that can mean only one thing: It's World Breastfeeding Week. Every year, from Aug. 1 to Aug. 7, the World Alliance for Breastfeeding Action (WABA) sponsors a campaign to educate the public about the benefits (and challenges) of breast-feeding. WABA centers its global campaign around a different theme every year.


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Even Slightly Preterm Babies Face Risks

Infant death rates in the United States continue to decline, but babies born even just a few weeks early are at considerably higher risk for death than those born at full term, according to a new report. In 2013, there were 5.96 infant deaths for every 1,000 live births in the United States, down slightly from 5.98 deaths per 1,000 live births in 2012, according to the report, from the Centers for Disease Control and Prevention. U.S. infant mortality has dropped 13 percent since 2005, when there were 6.86 deaths for every 1,000 live births, the report said.

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'Mega-Giant' Aneurysm Removed from Man's Brain

An auto mechanic in Boston survived the removal of a rare "giant aneurysm" from his brain, according to a new report of the man's case. Aneurysms larger than 2.5 centimeters (1 inch) are rare, and are called "giant aneurysms," but the size of this man's aneurysm was a whopping 7 centimeters (2.75 inches), which is extremely unusual, according to the report. "A 7-centimeter aneurysm is mega-giant — it's about the size of a good-sized peach," said Dr. Nirav Patel, the neurosurgeon at Boston Medical Center who performed the man's surgery and co-authored the case report, published today (Aug. 5) in The New England Journal of Medicine.

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Dangerous Roads: States with Most Drunk Drivers Revealed

People who live in Hawaii are the likeliest of those of any state to drive drunk, and Midwesterners also have high rates of drunk driving, according to a new report of drunk driving rates in the United States. The results show a stark difference in drunk driving rates among states and regions, as well as between men and women. In 2013, more than 10,000 people died in car crashes in which the driver had a blood alcohol concentration above 0.08 percent, the legal limit for drunk driving.

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NY Legionnaires' Outbreak Highlights Nationwide Rise

A large outbreak of Legionnaires' disease in New York City has put the illness in the spotlight in recent weeks, but experts say the illness needs more attention in general, as cases have increased nationwide over the last decade. Since the outbreak was first reported, on July 10, 86 people in the South Bronx have been sickened with Legionnaires' disease, including seven who have died. The disease is a type of pneumonia caused by the bacteria Legionella, which live in watery environments.

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Elephant-Size Underwater Blob Mystifies Divers

Those glittery specks are squid eggs, and the blob is called a squid egg nest, said Michael Vecchione, director of the NOAA National Systematics Laboratory at the Smithsonian and a curator of cephalopods at the National Museum of Natural History in Washington, D.C. The divers are lucky to have found one so close to shore, said Vecchione, who wasn't part of the dive.


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Slooh Webcast to Mark Rosetta Comet Mission's Closest Sun Approach Saturday

Last November, the European Space Agency's (ESA) washing-machine-size Philae lander detached from its orbiting Rosetta mothership and came to rest on the surface of Comet 67P/Churyumov-Gerasimenko after a harrowing and dramatic double-bounce touchdown. Comet 67P will make its closest pass to the sun next Thursday (Aug. 13), with Philae still along for the ride, and ESA and the online Slooh Community Observatory will mark the event with a webcast that begins at 1 a.m. EDT (0500 GMT) Saturday (Aug. 8). You can watch the show directly from Slooh at the observatory's website: www.slooh.com.


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See Mercury, Jupiter and Bright Star Form a Celestrial Trio at Sunset

Over the next few nights, observers with clear skies and a great view of the low western horizon may be able to observe a triple conjunction between the planets Mercury and Jupiter and the bright star Regulus. Look for this celestial trio tonight (Aug. 7), with Jupiter, Regulus and Mercury aligning to form an equilateral triangle in the western night sky that measures about 1 degree per side. Mercury will be on top, Regulus to the left, and Jupiter to the right.


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Why Cats Have Vertical Pupils

Vertical-slit pupils are most common among nocturnal predators that ambush their prey, according to the new research, published today (Aug. 7) in the journal Science Advances. The observation that predators tend to have vertical pupils and prey horizontal ones dates back to the 1940s, but no one had ever quantified that difference, said Martin Banks, a vision researcher at the University of California, Berkeley.


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