Mars is not the pristine, stratified world that people once imagined it is a graveyard of shattered worlds, their shattered remnants encapsulated deep in its mantle for over four billion years. It is ...

Earth's mantle is a restless, enigmatic engine that powers volcanism, recycles crust, and regulates the long-term evolution of the planet. But one of its most elusive characteristics—the redox state, ...

Oceans cover three-quarters of the Earth, yet only 20% of the seafloor has yet been mapped. The race to understand these ...

For years, astronomers have been excited about the idea that some planets beyond our solar system might be covered by vast, ...

The first treaty to protect marine diversity in international waters will come into force early next year after being ...

A new study challenges the dream of water-rich “Hycean” planets like K2-18b, suggesting that most sub-Neptunes lose their water deep into their interiors during formation. Instead of vast oceans, ...

There is much less water on the surfaces of distant planets outside our solar system than previously thought. These ...

Scattered across an abyssal plain known as the Clarion-Clipperton Zone (CCZ) are polymetallic nodules that are a potato-sized ...

In its youth, the dwarf planet Ceres may have brewed a chemical banquet beneath its icy crust.

We spoke with U.S. Ocean Decade Early Career Liaison Kailani Acosta about her work as part of the Early Career Ocean Professional (ECOP) Network Programme under the UN Ocean Decade.

A collection of short dispatches from the field of climate microbiology conveys the contributions that single-celled life ...