Wednesday, June 19, 2013

What Is A Human?

I learned long ago that humans are colonial animals:  we are crawling with single-celled organisms inside and out, and could not live without them.

Thanks to modern genomic science, it seems that even those "human" cells are not entirely human - 8% or more of the DNA in our cells is viral.  Evolution may have been controlled as much by viruses as the environment.

This is a fascinating book!

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