A human embryo in the blastocyst stage of development. Opponents of embryonic stem cell research argue that it is unethical because extracting stem cells destroys the blastocyst, which they believe is morally equivalent to a person.

Embryo ethics

As the debate over stem cell research resumes in Washington this week, the moral principle on which the White House bases its position remains largely unexamined

By Michael J. Sandel
April 8, 2007

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As the Senate prepares to take up stem cell legislation this week, Congress and the president are at odds over a tangled question at the boundary of science, ethics, and religion. President Bush has restricted federal funding of embryonic stem cell research, and last year cast the first veto of his presidency when Congress tried to ease the restriction. With ... (Full article: 2083 words)

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