[stazz1]

In the Egyptian Book of the Dead, one of the things you had to attest to at death was that you had "never willfully blocked the flow of a river" -- makes sense given the prominent importance of the Nile. With respect to your comments, I think that temporary logjams and permanent human dams are not comparable.

[JoeAltmaier]

Remains to be seen if the human dams are permanent!

In the scheme of nature, humans are just a blip so far.

[stazz1]

Truly, if you consider the life of a redwood, just a blip on its radar