Hi Roy,
Gen 1:28 Then God blessed them, and God said to them, "Be fruitful and multiply; fill the earth and subdue it; have dominion over the fish of the sea, over the birds of the air, and over every living thing that moves on the earth."
Subdue - To conquer by force or the exertion of superior power, and bring into permanent subjection; to reduce under dominion. (E-Sword dic.)
To me this first has a physical meaning. If there were people on the earth before Adam, they had not subdued the earth. Maybe this is the beginning of this period of the earth being subdued. It does seem from that time forward man has indeed been in the process of conquering and has brought into subjection most of the elements here on earth. We certainly have put under dominion most of the living ceature at this point. IMO we have abused these privleges in many ways and the earth and it's creatures are suffering. So then you can see how the Scripture that Marques posted are implied.
Just thought I would share the way I'm looking at this.
mercy, peace and love
Kat