"MARIANA, Brazil -- "Three days after a massive mudflow and flood caused by ruptured dams at an iron ore mine, Brazilian authorities are still struggling to determine a cause or even recover the bodies of as many as 28 people possibly swept away in the torrent."

"Casualties from a collapsed dam at a Brazilian mine owned by Vale and BHP Billiton mounted on Friday after rescue teams worked through the night to find the dozens missing in mudslides that devastated a nearby village."

"A stubborn forest fire in the Brazilian Amazon is threatening to consume the forest home of one of the last remaining uncontacted tribes on Earth – the awá-Awá."

"Strong aftershocks rippled through Chile on Thursday after a magnitude 8.3 earthquake that killed at least eight people and slammed powerful waves into coastal towns, forcing more than a million people from their homes."

"With bows, arrows, GPS trackers and camera traps, an indigenous community in northern Brazil is fighting to achieve what the government has long failed to do: halt illegal logging in their corner of the Amazon."

"RIO DE JANEIRO - Thirteen rowers on the 40-member U.S. team came down with stomach illness at the World Junior Rowing Championships - a trial run for next summer's Olympics - and the team doctor said she suspected it was due to pollution in the lake where the competition took place."

"QUITO, Ecuador — Pope Francis on Tuesday called for increased protection of the Amazon rain forest and the indigenous people who live there, declaring that Ecuador must resist exploiting natural riches for “short-term benefits,” an implicit rebuke of the policies of President Rafael Correa."