Cave formation starts with a simple chemical reaction between water and carbon dioxide in the atmosphere, creating carbonic acid. This weak acid forms when rainwater combines with CO2, then ...

Missouri is freckled with geologic features like caves and sinkholes. This is because the bedrock — composed of soluble rock like limestone and dolomite — is conducive to karst formation. Missouri has ...

On Sunday’s episode of The Excerpt podcast: Hidden beneath Earth’s surface are caverns and pathways that hold the secrets of our planet’s very beginnings. Even after decades of exploration, there are ...

As Carlsbad Caverns’ cave specialist, Rod Horrocks helps to create a living laboratory for researchers, including Nasa scientists who search for life on other planets. A towering stone pillar emerged ...