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  1. Health & Medicine

    Still mysterious, aging may prove malleable

    Our editor in chief discusses the science of aging.

    By Eva Emerson
  2. Life

    A healthy old age may trump immortality

    Despite disagreements about what aging is and isn't, scientists have reached a radical consensus: It can be delayed.

    By Tina Hesman Saey
  3. Neuroscience

    The brain’s blueprint for aging is set early in life

    The brain's decline may mirror its beginning, offering clues to aging.

    By Laura Sanders
  4. Animals

    Organisms age in myriad ways — and some might not even bother

    There is great variety in how animals and plants deteriorate (or don’t) over time.