As daylight diminishes, people can feel their mood dimming. In fact, millions of U.S. adults experience seasonal affective ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) When people name the most important inventions in history, light bulbs are usually on ...

A Chilean astronomer has become dedicated to battling light pollution in the Atacama Desert and preserve what is considered the best place on Earth to study space. Eduardo Unda-Sanzana at the Paranal ...