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Planetary ScienceA New Flight Plan
President Bush recently unveiled an ambitious plan for a manned mission to Mars, using the moon as a testing area and stepping-stone, but for many planetary scientists the moon is a desirable destination in and of itself.
By Ron Cowen -
19387
Your article quotes a pediatrician as saying, “we’re moving to selection on the basis of a trait that is of no benefit to the child to be born.” I disagree. The child to be born would have the benefit of a healthy older sibling. Even saving the parents from the trauma of a dying child […]
By Science News -
Health & MedicineBorn to Heal
The controversial strategy of screening embryos to produce donors for siblings raises hopes and presents new ethical dilemmas.