Curiosity rover searches for new clues about Mars' ancient water

NASA's Curiosity rover has begun exploring a new region of Mars, one that could reveal more about when liquid water disappeared once and for all from the Red Planet's surface. Billions of years ago, Mars was much wetter and ...

New geological study shows Scandinavia was born in Greenland

The oldest Scandinavian bedrock was "born" in Greenland according to a new geological study from the University of Copenhagen. The study helps us understand the origin of continents and why Earth is possibly the only planet ...

The Italian central Apennines are a source of CO₂, study finds

Tectonically active mountains play an important role in the natural CO2 regulation of the atmosphere. Competing processes take place here: At Earth's surface, erosion drives weathering processes that absorb or release CO2, ...

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Mineral

A mineral is a naturally occurring solid formed through geological processes that has a characteristic chemical composition, a highly ordered atomic structure, and specific physical properties. A rock, by comparison, is an aggregate of minerals and/or mineraloids, and need not have a specific chemical composition. Minerals range in composition from pure elements and simple salts to very complex silicates with thousands of known forms. The study of minerals is called mineralogy.

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