A 2022 satellite photo shows smoke rising from a caldera on Tofua, highlighting the "looming threat" of the volcanic island.

These mountains are made of extremely dense and ancient material, giving scientists valuable clues about the Earth's early ...

Until now, only about a quarter of the seafloor has been mapped using ships with special sonar equipment. The rest has ...

From its perch in the foothills of the 3.4-mile-high mountain, you can see over an expanse of plains, called Aeolis Palus, ...

Experts have been working on mapping the ocean floor with traditional methods, sending ships across the water with sonar ...

At the top of the world, there is a sea—the remains of one, at least. The summit rocks of Mount Everest, the highest ...

Scientists have identified two enormous mountains hidden deep beneath the Earth’s surface, each standing an extraordinary 620 miles (1,000 kilometers) tall—more than 100 times taller than Mount ...

Earth’s frozen places — ice sheets, glaciers and permafrost — are melting: a clear sign of climate change and a planet ...

A Lake Older Than Mountains Lakes, like mountains, can last millions of years. However, most lakes are short-lived in ...

The rates of erosion in mountains could give us better assessment of potential ... The inexorable connectedness in understanding our planet -- the Earth itself, the environment in which we live and ...

There’s something grounding about walking through places that remind you how old and complex the planet really is. These ...