I find the terrain mod a big improvement, I wonder if noone at Firaxis ever considered redoing the original terrain. I agree with Smirk that polution is hard to notice in forest and jungle squares. Switching to the old doesn't appeal to me although it would certainly be a solution. I also think there is a small glitch in the irrigration on desert tiles. In the upper left corner of these tiles are two lines in player colour I think. They're orange on my piece of map anyway, as is my player colour. But to end positive: great work Rhye!