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How to get eight uninterrupted hours – by a sleep professor
All life on earth has its own internal circadian rhythm, synched to the day/night cycle in which we have evolved. In mammals, humans included, it is mostly light that keeps this rhythm in step ...
BBC1y
What is day and night?
Video transcript for 'Day and night' SEYMOUR: Hello, Seymour Science here! As we all know, sometimes it’s day… and sometimes it’s night… but why do we have day & night? My guest today is ...
BBC2y
Day and night
When they are in the shade, it's night time. SEYMOUR: Hello, Seymour Science here! As we all know, sometimes it’s day… and sometimes it’s night… but why do we have day & night? My guest ...