The world’s deepest river: How the Congo reaches depths equal to a 70-storey building

The Congo River, the world's deepest, flows through six West-Central African nations, forming a vast basin supporting rich biodiversity and 75 million people. This vital river, which crosses the Equator twice, boasts immense hydroelectric potential and is crucial for carbon sequestration, earning its basin the title of the "second lungs" of the world.