This week, Morning Brief reader Collette wrote in to ask, "There may be blue sky, but what makes for a deeper blue in one ...

The sky shifts from blue to red as the day ends. This film uncovers the science of light scattering that paints Earth’s skies.

WASHINGTON — From crimson leaves to golden fields and coppery hills, Mother Nature is known to put on a show during the fall months. If you look up and notice a bluer-than-average sky, your eyes ...

Locals and tourists are getting a big surprise during the government shutdown. The Muir Woods National Monument has reopened ...