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  1. Life

    2009 Science News of the Year: Genes & Cells

    Cancer-fighting roles Scientists have discovered a new role in cancer protection for an already well-known tumor suppressor protein. The protein, called p53, protects cells from becoming cancerous by sensing stress and either shutting down cell division or triggering cell death. Researchers at the University of Tokyo and colleagues have discovered that p53 also plays a […]

    By Science News
  2. Chemistry

    2009 Science News of the Year: Molecules

    Tangles of collagen IV chains link at globules via sulfur-nitrogen bonding (illustrated above). Credit: Courtesy of Science/AAAS New bond in the basementBasements house hidden treasures — including a chemical bond never before seen in living things. Scientists have discovered that collagen fibers in the basement membrane — a tough, structural layer of cells that surrounds […]

    By Science News
  3. Health & Medicine

    2009 Science News of the Year: Nutrition

    Natural vanilla extract comes from pods (shown), but most vanillin is synthesized in the lab.