Here in the U.S., we're adrift in a constant war of political words. On one side we have political conservatives who want to own guns, build play forts out of money and drill for oil on the moon. On the other side, we have political liberals who think marijuana should be legal, hospitals free and cats afforded basic human rights.
OK, so those are exaggerations, but the exaggeration serves to drive home the fact that liberals and conservatives often come off like two separate species who just happen to share the same basic morphology. But do the differences go deeper than nurtured beliefs and values? Do liberals and conservatives have different brains?