The climate phenomenon emerged in late spring 2023, as waters grew warmer and sea levels rose higher than usual in the tropical Pacific Ocean.

These swirling tendrils of phytoplankton might be Noctiluca scintillans—a type of marine dinoflagellate known to inhabit this area.

Volcanoes, rainforests, and reefs abound in this tropical U.S. territory.

At the strait's narrowest point, only 13 kilometers separate Europe and Africa.

Sea ice breaks up in the southern reaches of Canada's Hudson Bay.

Smoke from the fires in Canada polluted the air and shrouded the Minneapolis skyline.

The long-lived cyclone is expected to make landfall near the border of India and Pakistan.