Trilobites: Cities That Never Sleep Are Shaped by Sunrise and Sunset

A study using cellphone call records of more than a million people found that city dwellers continue to be affected by Earth ’ s natural light-dark cycle.
Source: NYT Health - Category: Consumer Health News Authors: Tags: Sunlight Urban Areas Melatonin (Hormone) Cellular Telephones PLOS Computational Biology (Journal) Monsivais, Daniel Europe University of Helsinki Source Type: news