All along the east coast of the United States there are thousands of oval shaped pock marks, and scientists think they have a clue as to how they got there.

Where does the carbon in the atmosphere come from?

Due to thousands of years of geological evolution, Huanglong consists of numerous unique landscapes of geological landforms. Glacial revolution, terrane structure, stratum of carbonic acid rock, tufa water and climatic conditions such as...

The Jiuzhaigou valley is part of the Min Mountains on the edge of the Tibetan Plateau and stretches over 72,000 hectares . It is known for its many multi-level waterfalls, colorful lakes, and snow-capped peaks. Its elevation ranges from...