This could be the darkest river in the world
Researchers have discovered one of the world's darkest rivers in Congo, called the Ruki River. It has a unique ecosystem that is still not well understood.
ETH Zurich is a leading science and technology university in continental Europe. It is the place where 18,000 people from 80 nations study, research and work. About 370 professors in 16 departments carry out research and teach, with a focus on engineering sciences, mathematics, and natural and system-oriented sciences.