To enjoy the outdoors in an area with miles of shoreline camping and views, head to California's largest man-made lake where ...

Isotope analysis of limestone cave deposits indicates repeated humid periods in the Saharo-Arabian Desert over the past eight million years. The Saharo-Arabian Desert is one of the world’s largest ...

Officials with Death Valley National Park say numbers for the Devil’s Hole pupfish are back on the path of recovery after two ...

Visitors marvelled at the weathered limestone rocks hanging from the ceiling of South Africa's Sterkfontein caves, millions ...

Graham Worton shows Michael Portillo around the spectacular prehistoric landscape of Wren's Nest The limestone caverns of Dudley's Wren's Nest National Nature Reserve will take centre stage in tonight ...