Between two major rivers in China, a vast network of underground caves and rivers crisscrosses below the surface. The caverns are created as monsoon rains wear down the soft karst rock on the way ...

Here’s how big the Yangtze is. A third of all the inhabitants of China (which means more than 400 million people) live in the area covered by the Yangtze’s river basin. The Yangtze basin provides ...