Shinya Yamanaka from Kyoto University was named the winner of the Nobel Prize in Physiology or Medicine for discovering how mature, adult cells can be reprogrammed into immature stem cells. Shizuo Kambayashi/Associated Press hide caption

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Nobel Winners Unlocked Cells' Unlimited Potential
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Each of these mouse pups was born from an egg scientists created using embryonic stem cells. It's possible the technology could change future treatment for human infertility. Katsuhiko Hayashi hide caption

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Scientists Create Fertile Eggs From Mouse Stem Cells
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The white arrows in these two tumor samples point to a subset of tumor cells that are in a resting state. Nature hide caption

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Lab Findings Support Provocative Theory On Cancer 'Enemy' Within
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Study Suggests Way To Create New Eggs In Women
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Controversy Over Stem-Cell Research Keeps Charities On Sidelines
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While talking with the media outside the Exciting Idlewild Baptist Church in Lutz, Fla., on Sunday, former House Speaker Newt Gingrich called for a commission to look at new rules for clinics that perform in vitro fertilization. Matt Rourke/AP hide caption

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Dr. Paolo Macchiarini, of Karolinska University Hospital, implants a synthetic windpipe. Karolinska Institute hide caption

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Cancer Patient Gets First Totally Artificial Windpipe
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