A fiery force beneath the ocean is reshaping Tonga’s Home Reef, growing an island through eruptions over the past few years.

Sailing in Australia’s exclusive economic zone, the three vessels were not breaking international law, but they were ...

The #1 most popular city in the world to visit, based on data. Plus, see the rest of the top 100.

The Japan Trench, a vast tectonic chasm along the Pacific Ring of Fire, is known for its extreme depth—stretching 5 miles ...

Arctic daily sea ice extent continued to hover near record daily lows in January ... and as a result, sea ice in the Arctic Ocean is decreasing. Sea ice loss has far-reaching effects on the planet ...