EarthWords is an on-going series in which we shed some light on the complicated, often difficult-to-pronounce language of science. Think of us as your terminology tour-guides, and meet us back here ...

There have been 8 more overflows from the north vent since the Kīlauea daily update was released at 9 am HST this morning. Tilt and tremor remain constant. Inflation remains high. Steam and clouds ...

Summary: Small overflows from the north vent continue within Halema'uma'u crater at the summit of Kīlauea. All vents have strong glow and intermittent spatter. There is no anomalous activity outside ...

In general, the east-west trending Cordillera Central and Sierra de Cayey mountains form an insular hydrologic divide that separates the island of Puerto Rico into two climatologically distinct ...

Igneous rocks (from the Latin word for fire) form when hot, molten rock crystallizes and solidifies. The melt originates deep within the Earth near active plate boundaries or hot spots, then rises ...

Permeability and compressibility of “seal” sediment overlying the B1 sand gas hydrate reservoir: Hydrate 02 Geo Data Well, Prudhoe Bay unit, Alaska North Slope Permeability and compressibility of ...

Digital maps of bedrock elevation and overburden thickness (depth to bedrock) were constructed for the five boroughs of New York City by the U.S. Geological Survey, in cooperation with the New York ...

Hawaiian Volcano Observatory Volcano Observatory Summary: Magnitude-4.1 earthquake near Pāhala, Island of Hawaiʻi On Thursday, September 17 at 8:36 p.m. HST, a magnitude-4.1 earthquake occurred 3 mi ...

Despite sounding like something out of Harry Potter, a batholith is a type of igneous rock that forms when magma rises into the earth’s crust, but does not erupt onto the surface. The magma cools ...

The Earth is a watery place. But just how much water exists on, in, and above our planet? Read on to find out.

Lithium is necessary for low-carbon technologies that combat climate change, but lithium extraction is water-intensive. Changes in temperature and precipitation arising from climate change are ...

Volcano monitoring and research conducted at five U.S. volcano observatories advances our understanding of active volcanism and its impacts, and enables the USGS Volcano Hazards Program to provide ...