people would find ANOTHER exuse to fight each other. It wont stop, due to economics, religion and MONEY. Just watch or read Total Recall.
http://news.yahoo.com/s/space/20090219/sc_space/whatfindingalienlifecouldmeanforearth
http://news.yahoo.com/s/space/20090219/sc_space/whatfindingalienlifecouldmeanforearth