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  1. Oceans

    Deep-sea mining could start soon — before we understand its risks

    The U.S. push to mine international waters for metals defies global efforts to control and protect these fragile ecosystems.

    By Carolyn Gramling
  2. Health & Medicine

    These 5 nutrients might be lacking in your diet

    U.S. diets should include more of vitamins D and E, fiber, calcium and magnesium — all are essential nutrients that could offer health benefits.

    By Meghan Rosen
  3. Life

    Why these zombie caterpillars can’t stop eating 

    Sneaky chemistry by a real-life “Last of Us” Cordyceps fungus mind controls its zombie insect victims by convincing them they’re starving.

    By Susan Milius
  4. Physics

    Scientists 3-D printed a tiny elephant inside a cell

    The first structures ever 3-D printed inside living cells point to applications for biology research.