You hit the nail on the head there! Man's original mandate was to subdue the earth, and go forth (spread out) and multiply. I don't see anything in there about controlling weather or changing climates. Climates have been changing for the last 6000 or so years, and especially since the flood.
The earth is in a state of flux. It's changing. I ran across a verse, Gen 10:25 - where Peleg was named that because the earth was splitting up - the panagea break up was happening, and it was probably a terrifying time to live. Earthquakes, volcanoes, etc.