Nighthawks

Several hot, humid days have brought the common nighthawks back to Columbia. After a winter in South America, they have been circling north...

Dome of Drought

For the past two months, a dome of high pressure has been sitting over the southeastern U.S., aggravating a prolonged regional drought. As ...

Oil and the Tethys Sea

In the late Triassic, 200 million years ago, Pangea began to rift apart as the Tethys Sea spread east to west, separating the northern and s...

Karst Landscapes

Karst landscapes develop where thick layers of soluble bedrock (limestones or dolomites) lie close to the surface and where plentiful moistu...

The Appalachian Plateau

Stretching from the Catskills of New York to northern Alabama, the Appalachian Plateau is a broad uplift of horizontal, late Paleozoic sedim...

Colorado's Birding Capitol

Barr Lake State Park, northeast of Denver, is the undisputed capitol of birding in Colorado. Home to the Colorado Bird Observatory, this Par...

Cane Creek

Cane Creek State Park, in northern Ohio, sits on the south shore of Lake Erie, between Toledo and Sandusky. This relatively small Park, whic...