Friendship’s Dark Side: ‘We Need a Common Enemy’ Friendship generally is regarded as an unalloyed good. But scientists have found it also can be a conspiracy, a way to separate “us” from “them.” Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Eclipse 2018 USA: What time is the Super Blue Blood Moon in the US?Eclipse 2018 USA: What time is the Super Blue Blood Moon in the US?Scientists Discover a Bone-Deep Risk for Heart DiseaseMISSION TO MARS: Is nuclear fusion key to rocket fast enough to land humans on Red Planet?Super Blue Blood Moon 2018: Where can you watch the Super Blue Blood Moon in India?UFO ALERT: Massive rise in sightings over Alaska as earthquakes strike