Aliens May Destroy Humanity to Protect Other Civilizations
Submitted on August 20, 2011
By Ian Sample - Common Dreams
It may not rank as the most compelling reason to curb greenhouse gases, but reducing our emissions might just save humanity from a pre-emptive alien attack, scientists claim...Watching from afar, extraterrestrial beings might view changes in Earth's atmosphere as symptomatic of a civilization growing out of control – and take drastic action to keep us from becoming a more serious threat...
