Stig Östlund

fredag, januari 09, 2015

The Arctic ground squirrel sheds light on circadian rhythms -- Science Nation

The Arctic ground squirrel has developed highly specialized adaptations to extreme environments, and it has a lot to teach us about circadian rhythms and biological clocks. This species maintains circadian rhythms throughout the Arctic summer, despite the almost ceaseless daylight during this period. The squirrels' body clocks have evolved to work just fine without the help of the day/night cycle, which is so important to other animals--like humans.

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