Clues hidden in Martian rock suggest the red planet may have once hosted an ocean. Earth’s own ancient rivers are helping scientists uncover its watery past. Billions of years ago, water once coursed ...

Mars has experienced multiple ice ages, with each one leaving less ice than the last. By studying craters that serve as “ice ...

From drones to data to discovery, geology is high-tech. OHIO’s online MS in Geological Sciences gives professionals and ...

It began as a routine deep-sea expedition off theSaudi Arabian coast, one of many missions exploring the submerged topography ...

Fresh geological insights are offering a new perspective on Mars’ ancient climate, pointing to the possibility that a massive ...

For the first time, a scientific team has established a direct connection between bacterial communities residing inside the ...

Melting ice sheets in North America played a far greater role in driving global sea-level rise at the end of the last ice age ...

Hawke Woznick honors the natural world by incorporating animal bones into striking decor and wearable art pieces.

How do volcanoes work? What happens beneath their surface? What causes the vibrations—known as tremor—that occur when magma ...

These are two very different fault systems, but the sediment record suggests that in the past, at least three San Andreas ...

Lonneke Roelofs studied a phenomenon that we do not know here on Earth and that had never been observed by anyone before.

GIA is a trusted authority known for its rigorous, objective analysis of both natural and cultured pearls. Learn about how ...