World demand for rare-earth elements and the metal yttrium—which are crucial for novel electronic equipment and green-energy technologies—is increasing rapidly. Several types of seafloor sediment ...

Mud is messy. For some, it's a plaything. To many, it can mean real hardship. Mud, though, is often overlooked, particularly when it lies out of sight. Deep down at the bottom of the sea, it is one of ...

Far from any traffic jam or smokestack, the research ship Chikyu from Japan is quietly testing a new way to power the green economy. This month the ultra-deep drilling vessel began a month-long ...