Put your night owl tendencies aside and embrace the natural light to save your morning. Here's what you need to know.

Across millions of years of evolution, from ape to upright, email-answering, independent individual humans have developed an internal clock of alertness and exhaustion, driven primarily by the light ...

The sun may rise every morning, but the amount of sunlight reaching Earth's surface can substantially vary over decades, according to a perspective article led by an international research team.