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

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

Joanne Egan does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

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 ...

Almost all fossils are preserved in sedimentary rock. Organisms that live in topographically low places (such as lakes or ocean basins) have the best chance of being preserved. This is because they ...