Posts Tagged ‘darkness’

Light Pollution — National Geographic Magazine.

Our Vanishing Night

Most city skies have become virtually empty of stars.

By Verlyn Klinkenborg
Photograph by Jim Richardson

Better Sleep with Twilight

Better Sleep with Twilight

Lack of Sleep Greatly Increases Breast Cancer Risk: „Ohsaki Cohort Study“
Again: Possible reason is the melatonin suppression and other hormone effects from artificial light.