The hidden water reservoir is shockingly larger than previously thought—holding more than half the volume of Lake Tahoe.

It turns out the answers are in Earth's rocks. Even the Greeks and Romans realized that layers of sediment in rock signified old age. But it wasn't until the late 1700s -- when Scottish geologist ...

NASA will explore two different strategies for fetching Mars rocks collected by the Perseverance rover, and there's a chance ...

University of Oregon revealed its scientists were among the group that discovered a massive aquifer, described by National Geographic as a “body of rock and/or sediment that holds groundwater,” below ...

Dozens of samples of rock and sediment collected from Mars that could be used to detect ancient microbial life could be ...