Satellites recorded the largest ocean swells ever seen from space, highlighting how massive waves can act as storm “messengers,” carrying a storm’s power across entire oceans.

During recent storms, satellites recorded ocean waves averaging nearly 20 meters high—as tall as the Arc de Triomphe in Paris and the largest ever measured from space. Moreover, satellite data now ...

The ocean waters surrounding the United Kingdom and much of Europe are baking in an unprecedented marine heat wave, which scientists say is being intensified by human-caused climate change. Scientists ...