1. How to Build a Human
To coincide with the arrival of the second series of _Humans_, Gemma Chan – who plays the android Mia in the sci-fi drama – meets the folk from around the world making leaps and bounds in artificial intelligence. She visits a project that is attempting to create a computer more powerful than the human brain, and embarks on an experiment to create a robotic version of herself, before testing out its ability to create "human" responses.