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California’s coastal sand dunes are disappearing. A new statewide assessment finds that the state has lost approximately 60% of its coastal dune area since the mid-1800s, as urban development, coastal erosion and changing land uses have dramatically reshaped these important ecosystems.

RESTON, Va. — The U.S. Geological Survey announced $1,685,806 in matching grants to 26 state geological surveys to inventory, catalog and preserve historic geoscientific data and physical samples critical to understanding the nation's energy, groundwater and mineral resources, and mapping geologic hazards like landslides.

What’s behind the magnificent clear blue of Sapphire Pool in Biscuit Basin? Or those gorgeous milky blues in the namesake features of Norris Geyser Basin’s Porcelain Terrace?

RESTON, Va. – Low-level airplane flights will begin as soon as early November over northeastern Iowa and southeastern Minnesota to image geology using airborne geophysical technology.

“How tall is the fountain?”

This is the question that volcano watchers keep coming back to once the lava fountains start at Kīlauea. And there have been plenty of opportunities to ask this, as we’ve now had 56 lava fountains over the past two years at the summit of Kīlauea.