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Understanding Sleep

After several billion years, evolution has failed to eliminate - even in one species - the need for sleep. Scientific study links the pace of the modern world with the prevalence of sleep disorders, with a staggering 10 - 20 per cent of the European and US population reporting sleep disruption. From sleep deprivation, sleep apnoea and the neuroscience of sleep, the report goes on to explore the significance of our dreams and asks what happens when we don't get enough sleep?