More than 200 rivers around the world have been analysed to reveal the water quality and what lurks beneath the surface.

The rivers of Europe are the veins through which life has flowed to the historic cities and towns that dot their shores. What would Paris be without the Seine? London without the Thames?

Europe is home to many beautiful landscapes. One of them in the east of the continent has been described as its Grand Canyon. The Tara river flows through two countries - Montenegro and some of ...