Movable silicon 'lenses' enable neutrons to see new range of details inside objects

http://ift.tt/eA8V8J An innovative new way to focus beams of neutrons might allow scientists to probe the interiors of opaque objects at a size range they were blind to previously, allowing them to explore the innards of thick, opaque objects from meteorites to cutting-edge manufactured materials without damaging them.

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Genetic prehistory of Iberia differs from central and northern Europe

http://ift.tt/eA8V8J Researchers combined archaeological, genetic and stable isotope data to encapsulate 4000 years of Iberian biomolecular prehistory.

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Sound localization: Where did that noise come from?

http://ift.tt/eA8V8J Humans can estimate distances to sound sources better when they move and exploit auditory motion parallax.

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Forty years of data quantifies benefits of Bt corn adoption across multiple crops for the first time

http://ift.tt/eA8V8J Researchers have pulled together forty years of data to quantify the effects of Bt field corn, a highly marketed and successful genetically engineered technology, in a novel and large-scale collaborative study. By tracking European corn borer populations, this study shows significant decreases in adult moth activity, recommended spraying regimens, and overall crop damage in vegetable crops such as sweet corn, peppers, and green beans.

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Double or nothing: Astronomers rethink quasar environment

http://ift.tt/eA8V8J Astronomers have identified nearly 200 'protoclusters,' the progenitors of galaxy clusters, in the early Universe, about 12 billion years ago, about ten times more than previously known. They also found that quasars don't tend to reside in protoclusters; but if there is one quasar in a protocluster, there is likely a second nearby. This result raises doubts about the relation between protoclusters and quasars.

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New insights into the origin of elongated heads in early medieval Germany

http://ift.tt/eA8V8J A palaeogenomic study investigates early medieval migration in southern Germany and the peculiar phenomenon of artificial skull deformation.

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Lack of water is key stressor for urban trees

http://ift.tt/eA8V8J A recent study finds that urban trees can survive increased heat and insect pests fairly well -- unless they are thirsty. Insufficient water not only harms trees, but allows other problems to have an outsized effect on trees in urban environments.

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