This summer is the last one to swim or explore Crater Lake by boat until 2029. Here's what it's like to adventure at the ...

The massive ice sheet, located in a remote region of northern Greenland, harbors a subglacial lake that appears to have flooded in 2014, releasing 23.8 billion gallons (90 million cubic meters) of ...

Water usually flows downward, but something strange happened under Greenland’s ice sheet when a deluge punched through the ...

We visited four of the country’s “crown jewels” and found deep concern for the park system’s future among Americans of all ...

The restrooms may be clean (for now), but a former administrator sees an erasure of history and scientific research and ...