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  1. Simulations reveal an unusual death for ancient starsRead the original story w/Photo

    Sep 28, 2014 | EurekAlert!

    This image is a slice through the interior of a supermassive star of 55,500 solar masses along the axis of symmetry. It shows the inner helium core in which nuclear... Certain primordial stars-those 55,000 and 56,000 times the mass of our Sun, or solar masses-may have died unusually.

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  2. Human genome was shaped by an evolutionary arms race with itselfRead the original story w/Photo

    Sep 27, 2014 | EurekAlert!

    New study of primate genomes reveals an ongoing battle to control 'jumping genes,' driving the evolution of greater genomic complexity New findings by scientists at the University of California, Santa Cruz, suggest that an evolutionary arms race between rival elements within the genomes of primates drove the evolution of complex regulatory networks that orchestrate the activity of genes in every cell of our bodies. The arms race is between mobile DNA sequences known as "retrotransposons" and the genes that have evolved to control them.

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  3. Bacteria harbor secret weapons against antibioticsRead the original story w/Photo

    Sep 8, 2014 | EurekAlert!

    The ability of pathogenic bacteria to evolve resistance to antibiotic drugs poses a growing threat to human health worldwide. And scientists have now discovered that some of our microscopic enemies may be even craftier than we suspected, using hidden genetic changes to promote rapid evolution under stress and developing antibiotic resistance in more ways than previously thought.

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  4. Study traces ecological collapse over 6,000 years of Egyptian historyRead the original story w/Photo

    Sep 7, 2014 | EurekAlert!

    Depictions of animals in ancient Egyptian artifacts have helped scientists assemble a detailed record of the large mammals that lived in the Nile Valley over the past 6,000 years. A new analysis of this record shows that species extinctions, probably caused by a drying climate and growing human population in the region, have made the ecosystem progressively less stable.

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  5. Mixing in star-forming clouds explains why sibling stars look alikeRead the original story w/Photo

    Aug 30, 2014 | EurekAlert!

    This computer simulation shows the collision of two streams of interstellar gas, leading to gravitational collapse of the gas and the formation of a star cluster at the center.

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  6. Why sibling stars look alike: Early, fast mixing in star-birth cloudsRead the original story w/Photo

    Aug 30, 2014 | EurekAlert!

    This 11-second movie shows a computational simulation of a collision of two converging streams of interstellar gas, leading to collapse and formation of a star cluster at the center.

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