How bringing back lost species revives ecosystems

Scientists often study the grim impacts of losing wildlife to hunting, habitat destruction and climate change. But what happens when endangered animals are brought back from the brink?

In Ethiopia, scientists identify a fossil otter the size of a lion

Scientists have identified a new species of long-extinct otter in Ethiopia that was the size of a modern lion. Weighing an estimated 200 kilograms, or 440 pounds, it is the largest otter ever described; it would have rubbed ...

World's first case of bird flu in porpoise: Sweden

A porpoise found stranded on a Swedish beach in June died of bird flu, the first time the virus has been detected in a porpoise, Sweden's National Veterinary Institute said Wednesday.

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