This week in science: The eerie origin of why people with schizophrenia hear 'voices in their head'; the chemistry that makes 'poop coffee ' such a delicacy; how humans could learn to breathe through our butts; and much more!

50-Year-Old Theory on Schizophrenia's 'Voices' Confirmed by Recent Study

New evidence finds people with schizophrenia hear 'voices in their heads' because their brains mistake their inner speech as external.

"When we speak – even just in our heads – the part of the brain that processes sounds from the outside world becomes less active," explains Thomas Whitford, a psychology researcher at the University of New South Wales. "This is because the brain predicts the sound of our own voice. But in people who hear voices, this prediction seems to go wrong, and the br

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