Sky’s brilliant hues may help bodies keep time
![sunset](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/04/ay_sunsetticker.jpg?fit=860%2C460&ssl=1)
Our bodies’ internal clocks may interpret twilight’s bluish hue as a signal to get some rest.
Luis Medina/Flickr (CC BY-SA 2.0)
Our bodies’ internal clocks may interpret twilight’s bluish hue as a signal to get some rest.
Luis Medina/Flickr (CC BY-SA 2.0)