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'Miracle man' suddenly recovers from death's door in US state of Nebraska

A man whose children had decided to remove his breathing tubes has recovered and left an Omaha hospital after weeks of therapy. Now his family members call T. Scott Marr — once nearly brain-dead — the “miracle man.” Marr originally was diagnosed with a stroke on Dec. 12 after he was found lying in his… Read More »

Artificial Embryos Made from Stem Cells Raise Ethical Issues

Stem cells (so-called “master cells”) are unique and important in the body because they can do almost anything, and scientists have only begun to discover their potential. That’s why researchers’ use of them has created controversy, attracting the attention of scientists, policymakers, and bioethicists across the globe. Stem cells can transform into any of the… Read More »