Ag has been in some national parks for a long time. Its role in Point Reyes National Seashore and Golden Gate National ...

Simon Parker is so enamored with off the beaten track America, that he has cycled across the nation twice. Here are 23 of his ...

For Maryland history buffs, local treasures abound. Old maps of Hagerstown and surrounding Washington County communities hang ...

Researchers studied the DNA of two 7,000-year-old naturally mummified individuals excavated in the Takarkori rock shelter in ...

Mineral formations in caves reveal recurring periods of humidity in the Arabian Desert over the last 8 million years.

The Sahara desert, once lush and green, during a time between 14,500 and ... from sub-Saharan African populations at about the same time as the modern human lineages that spread outside of Africa ...

Dromedary camels walk through sand dunes in the Arabian Desert near Margham, Dubai, United Arab Emirates. A new study adds evidence to theories that this region was once a wet, green climate.

The Sahara Desert is one of Earth's most arid and desolate places ... During a period from about 14,500 to 5,000 years ago, it was a lush green savannah rich in bodies of water and teeming with life.

Based on a climatic record from desert speleothems, researchers show recurrent humid intervals in the central Arabian interior over the past 8 million years. (Paul Breeze/The Green Arabia Project) (CN ...