With the first U.N. climate talks in the Amazon set for November, Brazil is fast-tracking a series of controversial decisions ...

President Donald Trump on Thursday pulled the U.S. out of an agreement with Washington, Oregon and four American Indian ...

Rivers have been an essential part of human civilization for millennia, providing water, transport, and fertile land for agriculture. But have you ever wondered which river is the longest on Earth?

A recent study suggests that ocean changes are the primary nutrient source for sargassum blooms since 2011, challenging ...

turned into the Amazon River. This view of the Rio Negro, the Amazon's largest tributary, was taken by McIntyre from near the city of Manaus in Brazil. Photograph by Loren McIntyre, National ...