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  1. Health & Medicine

    Risky Legacy: African DNA linked to prostate cancer

    The high rate of prostate cancer among African American men may result in large part from a newly identified stretch of DNA passed down from their African ancestors.

    By Ben Harder
  2. Astronomy

    Enlightened: Dark matter spotted after cosmic crash

    In the aftermath of a cosmic crash between two galaxies, researchers say they've detected invisible dark matter for the first time.

    By Eric Jaffe

  3. 19723

    I won’t state that “dark matter” hasn’t been discovered. However I disagree that empirical evidence for it is demonstrated in this collision. Other phenomena that could explain the images include excitation of preexisting gases or imaging artifacts.