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Why is living space important and can we learn to live with less of it? Why are the Japanese so good at living small and is sharing space more important than having space to ourselves?

To find out why, Catherine Carr meets the principal investigator on the HI-SEAS project; a specialist in Japanese compact homes; a housing expert; the owner of a Tiny House; a man who grew up in slum; an environmental psychologist and an anthropologist.

(Photo: Inside a dolls house. Credit: Shutterstock)