What Exactly is a Stem Cell? [Video]

You've probably been hearing about stem cells since at least the 1990s. There have been political debates over the 'ethics' of stem cells and numerous scientific reports on the uses, harvesting and creation of stem cells but if you really don't know what a stem cell is and are afraid to ask at this point this video may help. In just over 4 minutes it explains what stem cells are, what they do and where they come from.

[via Geeks are Sexy]
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