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Sat, 23 May 2015 10:21:04 EDT
Auroras on Mars
One day, when humans go to Mars, they might find that, occasionally, the Red Planet has green skies. NASA's MAVEN spacecraft has detected evidence of widespread auroras in Mars's northern hemisphere. Unlike Earth, Mars does not have a global magnetic field that envelops the entire planet. Instead, Mars has umbrella-shaped magnetic fields that sprout out of the ground like mushrooms, here and there, but mainly in the southern hemisphere. These umbrellas are remnants of an ancient global field that decayed billions of years ago.
Sat, 23 May 2015 10:17:23 EDT
Mars rover's laser-zapping instrument gets sharper vision
Tests on Mars have confirmed success of a repair to the autonomous focusing capability of the Chemistry and Camera (ChemCam) instrument on NASA's Curiosity Mars rover.
Sat, 23 May 2015 10:14:06 EDT
Curiosity rover adjusts route up Martian mountain
NASA's Curiosity Mars rover has just climbed a hill to approach an alternative site for investigating a geological boundary, after a comparable site proved hard to reach.
Sat, 23 May 2015 10:09:42 EDT
'Deep web search' may help scientists
When you do a simple Web search on a topic, the results that pop up aren't the whole story. The Internet contains a vast trove of information -- sometimes called the "Deep Web" -- that isn't indexed by search engines: information that would be useful for tracking criminals, terrorist activities, sex trafficking and the spread of diseases. Scientists could also use it to search for images and data from spacecraft.
Fri, 22 May 2015 17:47:19 EDT
Birds 'weigh' peanuts and choose heavier ones
Mexican Jays (Aphelocoma wollweberi) distinguish between heavier and lighter peanuts without opening the nuts. The birds do it by shaking the nuts in their beaks, which allows them to 'feel' nut heaviness and to listen to sounds produced by peanuts during handling.
Fri, 22 May 2015 17:45:34 EDT
From chicken to dinosaur: Scientists experimentally 'reverse evolution' of perching toe
A unique adaptation in the foot of birds is the presence of a thumb-like opposable toe, which allows them to grasp and perch.  However, in their dinosaur ancestors, this toe was small and non- opposable, and did not even touch the ground, resembling the dewclaws of dogs and cats. Remarkably, the embryonic development of birds provides a parallel of this evolutionary history: The toe starts out like their dinosaur ancestors, but then its base (the metatarsal) becomes twisted, making it opposable.
Fri, 22 May 2015 15:23:54 EDT
Vaccines developed for H5N1, H7N9 avian influenza strains
Researchers have developed vaccines for H5N1 and H7N9, two new strains of avian influenza that can be transmitted from poultry to humans. The strains have led to the culling of millions of commercial chickens and turkeys as well as the death of hundreds of people.
Fri, 22 May 2015 13:16:09 EDT
How meteorological partnership between US, Cuba was created over 20 years
The two-decade-long process to form an active meteorological partnership between the United States and Cuba has been described in a new article. While the U.S. and Cuba have shared meteorological information and data relating to hurricanes and other tropical storms starting as early as the mid-1800's, this is the first time a partnership of this level has been created; it included the shipping and installation of sensitive GPS monitoring equipment, something that would normally not be allowed by either government.
Fri, 22 May 2015 13:16:07 EDT
Scientists create mice with a major genetic cause of ALS, frontotemporal dementia
A novel mouse has been developed that exhibits the symptoms and neurodegeneration associated with the most common genetic forms of frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS, Lou Gehrig's disease), both of which are caused by a mutation in the a gene called C9ORF72.
Fri, 22 May 2015 13:16:05 EDT
Proton therapy has fewer side effects in esophageal cancer patients
New research has found that esophageal cancer patients treated with proton therapy experienced significantly less toxic side effects, including nausea, blood abnormalities and loss of appetite, than patients treated with older radiation therapies.
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