When I was teaching, I used this blog to communicate with my students. Now I use it to share my photos.
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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.