Horizon journeys into the human memory, from how it emerges in childhood, develops through to adulthood, and fades in middle age.
Prof. Martin Conway reveals how our personal memories are linked to our senses.
Professor Dan Schacter has designed a test to illustrate how easily our memory can deceive us.
A pioneering technique may help to actually forget some events in our lives - simply by taking a pill.
Elsewhere on the BBC...
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