oceans

2019 had three of the warmest months on record

No, it wasn't your imagination. 2019 was a historically warm year. During the summer, dozens of cities in the US sweltered under record-high temperatures and waited out historically long hot streaks.

Massive waterfall formed on Greenland's ice sheet

What may have been the world's tallest waterfall briefly formed on Greenland's ice sheet last year, draining a meltwater lake of 5 million cubic meters of water -- equivalent to 2,000 Olympic-sized swimming pools -- in just five hours.

Swimming with Hawaii's charismatic spinner dolphins stirs controversy

On the west coast of Hawaii Island, the sun rises over tall volcanoes and glints off the vast blue Pacific in Honokohau Harbor near Kailua-Kona. Tourists climb aboard waiting boats in the bright morning light, giddy at the prospect of swimming beside the island's famous spinner dolphins.

Rover explores the solar system's oceans

Astronomers have uncovered increasing evidence that some bodies in our solar system, like Jupiter's moon Europa and Saturn's moon Enceladus, are actually ocean worlds.