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  1. Building Beauty

    Deconstructing flowers yields the secrets of petals, scents and hue.

    By Rachel Ehrenberg
  2. Astronomy

    Planck by Planck

    The launch of the European Space Agency’s Planck mission, set for late April or early May, will put into orbit a new tool —the microwave equivalent of polarized sunglasses — that may offer a view of the dawn of time.

    By Ron Cowen
  3. Life

    Dissing a loaded label for some unicellular life

    Prominent biologist calls ‘prokaryote’ outdated term.

    By Tina Hesman Saey

  4. Global Health Narratives: A Reader for Youth by Emily Mendenhall, ed.

    Short stories for youngsters reveal  worldwide public health problems. Univ. of New Mexico, 2009, 238 p.,