Scans of brain activity reveal decisions can be predicted even before a subject is conscious of them.
Brian Cox travels to the Ethiopian Highlands to study geladas, which share a common ancestor with humans and exhibit one of the more complex social structures of the primates.
Brian Cox compares his own cells to those of a camel and observes the differences under a microscope, and discusses how singles cell organisms became more complex.
In an experiment, the Marcus du Sautoy's senses are manipulated to make his brain think he is having an outofbody experience.
Marcus du Sautoy meets Francis Crick's biographer to discuss the significance of the double helix diagram his wife, artist Odile Crick, designed.
Michael Mosley and his researchers try to find out why and how fear drives us. Here we meet the subjects of the experiment and try to find out what they fear most...
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