Are microbes and germs good for you?

In common usage, the meaning of the word “nature” is rather limited.  It does not refer to planet earth as shaped by cosmic forces, yet almost exclusively to the living forms on which people depend and to the earth’s atmosphere and surface.  The interdependence between human beings and the other forms of life is so complete that the word nature usually has biological connotations, even when referring to inanimate substances.  In practice, we do not live on the planet earth but with the life it harbors and within the environment that life creates.

For examples, microbes, germs and viruses are microscopic and are about 400 times smaller than a surgical mask.  Yet surgeons do wear surgical masks don’t they?



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