Which single river carries a fifth of all river water? Why is the river Ganges worshiped as a goddess? Which river is home to crocodiles, hippopotamuses, and bull sharks? The world has many rivers, some have become busy ports and important trade routes, others act as vital lifelines to remote communities. Find out about the fascinating religious and cultural significance of some of the world’s rivers, the many different animals and plants that make their homes here, and why so many rivers are now in danger from pollution.