re wind mills will change wind directions in the atmosphere. possibly... (the wind mills are 320 ft tall...) but my guess Is.. quite a bit less impact than this <A HREF="http://www.terragalleria.com/america/mid-west/illinois/picture.usil6675.html" target="_blank">http://www.terragalleria.com/america/mid-west/illinois/picture.usil6675.html</A> <A HREF="http://andrewprokos.com/photos/new-york/skylines/nyc-panoramic-twilight/" target="_blank">http://andrewprokos.com/photos/new-york/skylines/nyc-panoramic-twilight/</A> <A HREF="http://www.molon.de/galleries/Singapore/BusinessDistrict/img.php?pic=10" target="_blank">http://www.molon.de/galleries/Singapore/BusinessDistrict/img.php?pic=10</A>