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Showing posts from November 23, 2015

Scientists create mosquito strain with malaria-blocking genes

By Will Dunham WASHINGTON (Reuters) - Scientists aiming to take the bite out of malaria have produced a strain of mosquitoes carrying genes that block its transmission, with the idea that they could breed with other members of their species in the wild and produce offspring that cannot spread the disease. The researchers said on Monday they used gene-editing, a genetic engineering technique in which DNA can be inserted, replaced or deleted from a genome, on a species called Anopheles stephensi that spreads malaria in urban India. Malaria is caused by parasites transmitted to people through the bites of infected female mosquitoes.


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Scientists create mosquito strain with malaria-blocking genes

By Will Dunham WASHINGTON (Reuters) - Scientists aiming to take the bite out of malaria have produced a strain of mosquitoes carrying genes that block its transmission, with the idea that they could breed with other members of their species in the wild and produce offspring that cannot spread the disease. The researchers said on Monday they used gene-editing, a genetic engineering technique in which DNA can be inserted, replaced or deleted from a genome, on a species called Anopheles stephensi that spreads malaria in urban India. Malaria is caused by parasites transmitted to people through the bites of infected female mosquitoes.


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How Earth's Hidden Magma Ocean Formed

The rotation of the newborn Earth may have helped to control the evolution of a giant magma ocean sitting on top of its core, researchers say. Knowing how Earth's magma oceans evolved over time could shed light on when the plate tectonics— the shifting of the rocky slabs that make up the planet and underlie earthquakes and volcanoes — began, scientists added. Previous calculations suggested that Earth possessed one or more giant oceans of magma, or molten rock.


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Scientists create mosquito strain with malaria-blocking genes

By Will Dunham WASHINGTON (Reuters) - Scientists aiming to take the bite out of malaria have produced a strain of mosquitoes carrying genes that block its transmission, with the idea that they could breed with other members of their species in the wild and produce offspring that cannot spread the disease. The researchers said on Monday they used gene-editing, a genetic engineering technique in which DNA can be inserted, replaced or deleted from a genome, on a species called Anopheles stephensi that spreads malaria in urban India. Malaria is caused by parasites transmitted to people through the bites of infected female mosquitoes.


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For Severe Weather, 'Is This Climate Change?' Is the Wrong Question (Op-Ed)

For the first five years of his career, Alex Rodriguez averaged 37 home runs a season. Then, he moved to the Texas Rangers, where his average swelled to 52 home runs a season. A-Rod's other statistics — runs batted in, slugging average — rose as well.


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Carbon Falling, Economies Rising: Expectations for the Paris Climate Summit (Op-Ed)?

Lynn Scarlett is the global managing director for public policy at The Nature Conservancy. Recently, she served as the deputy secretary and chief operating officer of the U.S. Department of the Interior and acting secretary of the Interior in 2006 during the George W. Bush administration.

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Einstein's Unfinished Dream: Marrying Relativity to the Quantum World

Don Lincoln is a senior scientist at the U.S. Department of Energy's Fermilab, the U.S.' largest Large Hadron Collider research institution. Lincoln contributed this article to Space.com's Expert Voices: Op-Ed & Insights. This November marks the centennial of Albert Einstein's theory of general relativity.


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'Letterlocked' Trove: X-Rays to Peer into Sealed 17th-Century Notes

For years, Jana Dambrogio, a conservator at MIT, has been studying the elaborate ways people used to fold and seal their letters to keep busybodies and spies from reading their secrets. The way a paleontologist analyzes fossils to reconstruct extinct creatures, Dambrogio looks at the blobs of wax and the folding patterns on flat, already-opened letters in manuscript collections so that she can reverse-engineer "letterlocking" techniques. "He asked me, 'What would you do if I told you there was a trunk with 600 unopened letters?'"Dambrogio said.


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Scientists on quest for friction-free oil

By Matthew Stock Scientists from BP are applying molecular science in their laboratories to make the perfect oil blend to reduce engine friction and increase efficiency. According to the company, friction caused by various metal-to-metal contact points is a major problem for car engines; costing the UK economy an estimated 24 billion pounds (36.2 billion USD) each year through lost efficiency and damage through wear and tear. The only barrier between the high-force contacts of engine surfaces is a thin layer of lubricant, but they are coming under increasing pressure from modern engines. ...

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Songbirds Woo Mates with Invisible Tap Dance

With the help of high-speed video, researchers from Hokkaido University in Japan and the Max Planck Institute for Ornithology in Germany have discovered that blue-capped cordon-bleu songbirds (Uraeginthus cyanocephalus) perform foot-stomping step dances during their courtship displays that are too quick to view with the naked eye. Because the birds only start tapping when their potential mates are on the same perch, the study authors think the dancers might punctuate the display with pleasing sounds or vibrations.


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Green car technologies collide in Los Angeles

By Alexandria Sage LOS ANGELES (Reuters) - Asian automakers are opening up a new front in the contest to define the future of cars in California, fielding a flock of cars powered by hydrogen in a bid to woo green car buyers from Tesla Motors Inc, the battery electric vehicle leader. Toyota, Honda and Hyundai used the opening days of the Los Angeles auto show, which draws thousands of car enthusiasts in one of the world's richest vehicle markets, to tout new fuel-cell cars. Automakers plan to offer these cars in California, although the rollout will be limited.


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Antarctica Is Gaining Ice, So Why Is the Earth Still Warming?

NASA recently released a study suggesting that the Antarctic Ice Sheet is gaining more ice than it is losing — a finding that, at first blush, seems to contradict the idea of global warming. So, how can Antarctica be gaining ice mass in a warming world where ice sheets are collapsing and the melting is predicted to increase sea levels across the globe?


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Cyborg Roses Wired with Self-Growing Circuits

Scientists have created a kind of cyborg flower: living roses with tiny electronic circuits threaded through their vascular systems. The miniscule electronic polymers are inserted into the plant, then almost magically self-assemble thanks to the rose's internal structure. "In a sense, the plant is helping to organize the electronic devices," said study co-author Magnus Berggren, an organic electronics researcher at Linköping University in Sweden.


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These Ancient Monster Galaxies Have Scientists Perplexed

New research has revealed 574 massive, ancient galaxies lurking in the night sky, and their existence so close to the time of the Big Bang calls into question scientists' best understanding of how large galaxies form. A new video released Wednesday (Nov. 18) from the European Southern Observatory (ESO) reveals the ancient galaxies' locations. "We are talking about massive galaxies, twice as massive as the Milky Way today," said Karina Caputi, an astronomer at University of Groningen in the Netherlands and lead author on the new work.


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Why NASA Europa Probe Will Study Jupiter Moon's Dust

BOULDER, Colo. — "Think about it as pieces of a puzzle," Zoltan Sternovsky said. NASA plans to launch a robotic Europa flyby mission in the early 2020s to address this question, and Sternovsky is part of a team developing one of the spacecraft's nine instruments — the Surface Dust Mass Analyzer (SUDA), which will determine the composition of materials ejected from the surface of the frigid moon. "Each instrument on the Europa mission is going to assess one piece of this puzzle," Sternovsky said here Nov. 4 at the university's Laboratory for Atmospheric and Space Physics, following a presentation by SUDA principal investigator Sascha Kempf, who's also based at UC Boulder.


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Attention Disorder Drugs May Harm Kids' Sleep

Some children with attention deficit hyperactivity disorder (ADHD) who take stimulant medications to treat their symptoms may develop sleep problems, according to a new analysis of previous research. Researchers analyzed nine previous studies involving a total of 246 children and teens that examined the relationship between ADHD medications and sleep.

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