Unravelling the reasons why mass extinctions occur

Scientists from the University of Leicester have shed new light on why mass extinctions have occurred through history—and how this knowledge could help in predicting upcoming ecological catastrophes.

The Karoo Basin and the end Permian mass extinction

Earth's biosphere witnessed its greatest ecological catastrophe in the latest Permian, dated to about 251.9 million years ago. The current model for biodiversity collapse states that both marine and terrestrial animals were ...

Bangladesh oil spill 'threatens rare dolphins'

Bangladesh officials warned Thursday that an oil spill from a crashed tanker is threatening endangered dolphins and other wildlife in the massive Sundarbans mangrove region, branding the leak an ecological "catastrophe".

Early warning signal for ecosystem catastrophe detected

Researchers eavesdropping on complex signals emanating from a remote Wisconsin lake have detected what they say is an unmistakable warning -- a death knell -- of the impending collapse of the lake's aquatic ecosystem.

Crews struggle to clear toxic Hungary sludge flood

(AP) -- There was no stopping the avalanche of toxic red sludge when it rammed into Kati Holtzer's home: It smashed through the main door and trapped the woman and her 3-year-old boy in a churning sea of acrid waste.