“In the more recent study, researchers discovered a greater volume of gray matter in two areas of the brain for subjects reporting conservative attitudes. “
Yep, just like I said recently, the human race is actually experiencing a true evolutionary split that will separate us into two distinct groups, one conservative and the other liberal. And you said that the conservatives will be the dominate species, and the one most likely to survive and thrive, because so many of us, in general, are fiercely independent and are resourceful and creative. Well, we may have been joking about all of this at the time, but there is actually science to support our wild speculation.
"Individuals with strong “physiological responses to disgusting images…are more likely to self-identify as conservative…than are individuals with more muted physiological responses to the same images.”
That would explain a lot. In their liberal world, where there are no moral absolutes, very little disgusts them, other than conservatives.
If we're going to have evolutionary divergence, it would be nice if we could give them their own continent to destroy.