The human brain contains over 100 billion neurons, and roughly 1 quintillion synapses. But how did it all get started? How did the first nervous systems, the...

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Comment by Henry Garcia III on June 15, 2011 at 1:10am
i enjoyed this video very much.
Comment by Gaytor on June 15, 2011 at 12:07pm
CDK007 has many great vids on YouTube. I think that we only have 6 or 7 of them here.

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