These are two contrasting hydrological phases of the Clauge River in temperate France during dry (top) and flowing phases (bottom). Disclaimer: AAAS and EurekAlert! are not responsible for the ...

There are many ancient hydrological sites around the world, so how is the Baiheliang site connected to the Rawda Island Nilometer? What is so unique about Baiheliang that it has the potential to ...