"Workers at Brazilian iron ore miner Vale SA fear for their safety after the Samarco dam burst in the town of Mariana, where the company was reducing the number of employees because of weak ore prices, despite its push for output and complaints about safety."

"Researchers say expanding food production could radically reduce biodiversity in these important forests over the next 30 years."

"Nine people are now confirmed dead, and a further 19 remain unaccounted for as a slow-motion environmental catastrophe continues to unfold following the collapse of two mining dams in Brazil’s mineral-rich state of Minas Gerais."

"Recent scientific discoveries show that the Amazon rainforest might control the climate for much of South America. The theory could mean even more disastrous ramifications for the fragile ecosystem if deforestation continues unabated." Besides being an engine for removing carbon dioxide from the atmosphere, the rainforest seems to pump a "river" of moisture through the atmosphere that is larger than the Amazon itself.

"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."