We descended from the high and mountainous lands of Meghalaya to the flats to the south and below. There, the translucent and green stream of the Dawki forms the border between India and Bangladesh. In a damp heat that we haven't felt for a long time, the river also attracts hundreds of Indians and Bangladeshis in a picturesque escape.
From 1879 to 1912, only the Amazon River basin generated the latex that, from one moment to another, the world needed and, out of nowhere, Manaus became one of the most advanced cities on the face of the Earth. But an English explorer took the tree to Southeast Asia and ruined pioneer production. Manaus once again proved its elasticity. It is the largest city in the Amazon and the seventh in Brazil.
1200km upstream of its delta, the Nile is no longer navigable. The last of the great Egyptian cities marks the fusion between Arab and Nubian territory. Since its origins in Lake Victoria, the river has given life to countless African peoples with dark complexions.
Third longest river in southern Africa, the Okavango rises in the Angolan Bié plateau and runs 1600km to the southeast. It gets lost in the Kalahari Desert where it irrigates a dazzling wetland teeming with wildlife.