20d
New Scientist on MSNPeople in industrial societies get more sleep than hunter-gatherersIndividuals in industrialised societies seem to sleep for longer than people in non-industrialised ones, but their circadian rhythms are more out of sync ...
More recently, there has been concern that people staring at their phones or LCD TVs may be having trouble sleeping as a result. In this new study, Samson and McKinnon have found that not only are ...
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