Images of one of the Amazon River’s main tributaries, the Negro River, show just how dramatically water is dwindling. When The Associated Press photographed the Negro River and surrounding areas ...

For a period of two years, between 1850 and 1852, the English naturalist Alfred Russell Wallace traveled up and down the Negro river, one of the main tributaries of the Amazon river. It was one of the ...

This river is known for beautifully meeting with a neighbouring river before it empties into the Atlantic Ocean.

S221-S237 (17 pages) The first extensive set of measurements of methane concentrations and fluxes for the Negro River and its major tributaries combined with complementary data for the Solimões and ...