In Tennessee’s Craighead Caverns, The Lost Sea is the second largest non-subglacial underground lake in the world.

How Crowley Lake columns formed was a mystery for some time, but researchers have finally solved it using X-ray analysis and electronic microscopes.

The Lake Erie watersnake was once endangered in Ohio and threatened federally. But thanks to a nearly decade-long effort, the snake is thriving once again.

A new lake data buoy deployed in Oregon’s Suttle Lake is revealing key insights into its food web and helping officials better manage salmon stocks there.