Uncategorized

  1. Health & Medicine

    Flawed Therapy: Hormone replacement takes more hits

    Elderly women taking estrogen and progestin are more likely to develop dementia, including Alzheimer's disease, and stroke than are women not taking the hormones.

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  2. Gut Check

    The normal microbial inhabitants of our intestines do a lot for their host.

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  3. Astronomy

    Red Team, Blue Team: Galaxy survey shows that color matters

    Using the largest survey of galaxies ever compiled, astronomers have found that the cosmos divides sharply along color lines.

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  4. Planetary Science

    New view of Earth

    On May 8, 2003, scientists pointed a camera on board the Mars Global Surveyor probe back at Earth and captured the first image from another planet that shows our world as more than a point of light.