The future of modern medicine took a new direction yesterday, as President Barack Obama signed an executive order, overturning a Bush-era policy on embryonic stem cell research.
Under President Bush, federal tax dollars were severely restricted from funding this type of research, placing him squarely in the camp of those who consider embryonic stem cells as sacrosanct as human life itself.
So, what does this change really mean? NPR science correspondent Joe Palca explains.
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