Scientists suspect many species are in decline—but there are still unanswered questions and a lot of hope. Here's when and ...

Sunlight reaching Earth’s surface isn’t as stable as we might think—it’s actually fluctuated dramatically over the decades due to pollution and clean air efforts. An international team of researchers ...

"Just as blue sunlight scatters in the Earth's atmosphere and makes the sun look slightly less blue, light from a strong blue, rich white street light enters your eyeball, scatters around in your ...

Stargazers who turn their eyes skyward — and use a little bit of imagination — will have a chance to spot a rare “smiley face” in space later this month.

Stunning video shows April’s full moon, known as the Pink Moon, rising over the Golden Gate Bridge on Saturday, April 12, casting a silvery glow against San Francisco’s iconic skyline. April’s full ...

Historical accounts of vast ocean waters glowing in the dark go back hundreds of years, and researchers are still trying to ...

Recent findings suggest that light pollution can affect lakes including producing toxic algae and altering carbon cycling.

Astronomers may have uncovered a hidden population of galaxies that could rewrite what we know about the universe's evolution. These faint, dusty galaxies were discovered using the deepest ...