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  1. Cells’ Root: Adult stem cells have a master gene

    Scientists have found a master gene that allows tissue-regenerating stem cells to retain their regenerative capacity.

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  2. Astronomy

    Stellar Spectacular: Brightest supernova

    Astronomers have discovered the brightest stellar explosion ever observed, and it could be the first example of a rare type of supernova involving a freakishly massive star.

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  3. 19830

    Perhaps there need not be “degrees of quantumness”. As the beams pass increasingly closer to the surface, the plate will induce a small (but increasingly larger) spread of energies (hence wavelengths) in the electrons within the beam, possibly explaining the “smearing out” of the fringes in the interference pattern. Michael D. MeloySanta Barbara, Calif. Peter […]

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  4. Physics

    Degrees of Quantumness: Shades of gray in particle-wave duality

    Light can be made to act as if it's composed of particles, waves, or something in between.

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  5. No Place Like Om: Meditation training puts oomph into attention

    Intensive meditation training boosts a person's control over attention and expands a person's ability to notice rapidly presented items.

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  6. Health & Medicine

    Risk Factor: Throat cancer linked to virus spread by sex

    Cancer of the throat and tonsils can arise from infection with a sexually transmitted virus.

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  7. Humans

    Lethal injection is inhumane, say researchers

    Prisoners killed by lethal injection may be conscious and experience pain and burning sensations while they asphyxiate.

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  8. Animals

    Sex—perhaps a good idea after all

    A family of mites may be the first animal lineage shown to have abandoned sexual reproduction and then reevolved it millions of years later.

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  9. Health & Medicine

    A smart pill for seniors?

    A dietary supplement combo boosts older adults' performance on simple mental tests.

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  10. Health & Medicine

    This trick boosts cancer’s spread

    A compound that helps keep cells organized and stitched into tissues may play a role in the survival of cancer cells that have seeded distant tissues in the body.

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  11. Cancer patients aided by yoga

    In breast cancer patients, practicing yoga appears to reduce both depression and biochemical markers of inflammation.

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  12. Alzheimer’s marker yields blood test

    Studies in mice suggest that it could be possible to screen blood for early, asymptomatic Alzheimer's disease.

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