While much is still theoretical, the new evidence is certainly beginning to change the way we think about brain diseases.

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"All you are really doing when you're collecting stuff from space is that you've got to get that information into your brain so you can think about it, " he explained in his podcast.

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My brain tells me it would be irresponsible to have a child in this polluted environment and I think about how my relatively small carbon footprint would grow dramatically.

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But Saxe's lab, using a machine called a transcranial magnetic stimulator, which applies an electromagnetic pulse to a targeted point in the brain, can temporarily disable the function in the TPJ and change what people think about someone else's actions.

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