No matter where you look, what this is plotting is the size of the relationship between disgust sensitivity and political orientation, and no matter where we looked, we saw a very similar effect.

And the kids that you see here all volunteered to be part of this, 28 of them, and you can see as soon as the picture comes up that they are in fact a remarkable group of young people all afflicted by this disease, all looking quite similar to each other.

All big societies that have governments, and where most people are strangers to each other, are inevitably similar to each other and different from tribal societies.

You take two groups of people who are similar in all relevant respects, and you remind one group that they're going to die but not the other, then you compare their behavior.

Mapmakers -- because my map of New York and your map of New York are going to look very similar, on account of the shape of New York -- often, mapmakers will insert fake places onto their maps, in order to protect their copyright.

And in fact, the modern salamander is very close to the first terrestrial vertebrate, so it's almost a living fossil, which gives us access to our ancestor, the ancestor to all terrestrial tetrapods.

And we believe that these responses in higher-order areas are induced or become similar across listeners because of the meaning conveyed by the speaker, and not by words or sound.

Number two is that majority groups don't get to realize the great extent to which they are similar to minorities -- our everyday experiences, our hopes, our dreams, our fears and our mutual love for hummus.

This study from 1999 used blood tests to confirm that the serotonin levels of the newly in love very closely resembled the serotonin levels of people who had been diagnosed with obsessive-compulsive disorder.

And the tiny water crystals here now look for all the world like they are frozen droplets of salty water, which is a discovery that suggests that not only do the jets come from pockets of liquid water, but that that liquid water is in contact with rock.