Biogeochemical insights from a major Amazonian river

Rivers provide water to billions of people and are critical linkages between continental ecosystems and oceans. Every run and every riffle reshape the surrounding landscape as a river transports nutrients and sediment downstream. ...

Tropical forest nations seek climate plan in Brazil

Nations from Brazil to Indonesia met Wednesday to seek a plan to save the world's tropical rainforests, a day after South American leaders drew criticism for failing to adopt a pledge to protect the Amazon.

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