Water is essential to life, yet its true origin on Earth still stirs debate. Scientists have long wondered whether it came ...

With less than one percent of Earth’s water available for drinking ... is that there is unequal distribution of the planet's usable freshwater. Six countries—Brazil, Russia, Canada, Indonesia ...

The University of Hawaii astronomer’s interest in habitable worlds began at a geothermal field in Iceland, where she and a ...

The mantle transition zone (MTZ), which occurs 410–670 kilometers below Earth's surface ... like ringwoodite and wadsleyite. The distribution of water in the MTZ, both today and in the past ...