Under the sea ice during the Arctic’s pitch-black polar night, cells power photosynthesis on the lowest light levels ever ...

The newly discovered "blazar," which has a mass equal to 700 million suns, is the oldest of its kind ever seen and changes what we know about the early universe.

ESO estimates the complex will leak as much light pollution as a city with a population of about 20,000. Parts of the ...

Red light therapy, also known as LED therapy, is trending for skin care. Here's what to know about it, according to a ...