Well, it's not like those rivers over there were clean in any of the recent past. The people have fished and eaten their catch over there for many decades that I know of. I was there in '67 and sanitation was non-existant, and that condition was certainly not new. Couple that with the fact that everyone smokes over there......and they still out-live us. Interesting? Maybe not.
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Agendas kill truth.
If it's a crop, plant it.