More than one-fifth of the global ocean—an area spanning more than 75 million sq km—has been the subject of ocean darkening over the past two decades, according to new research. Ocean darkening occurs ...

Researchers say more than a fifth of the planet’s ocean — which makes up 70 percent of the surface of the Earth — has been subject to the darkening process over the course of the past two decades. It ...

Picture the vast expanse of ocean you've seen in postcards or vacation photos - that brilliant blue stretching endlessly toward the horizon. Yet something profound is happening beneath those familiar ...