Affected swaths of ocean are roughly the same size as Africa, China, Europe and North America's land areas combined.

The answers to today's Quordle Daily Sequence, game #1223, are… ...

More than 20 percent of the world’s oceans have darkened in the last two decades, posing a threat to marine life and ...

Experts used satellite imaging and computer models to study how light penetrates the ocean. They focused on the photic zone — the sunlit layer that supports much of marine life. In 9% of ocean areas, ...