Tens of millions of red crabs are making their annual migration to the ocean on Christmas Island. The island's 1,200 human ...

A researcher says the long-suspected extinction of the mouse-sized mammal is "another stain" on Australia's environmental record.

If Tom Gilbert could bring any extinct animal back to life, he said, it wouldn't be dinosaurs or woolly mammoths or any other megafauna that once roamed the planet. His is a humbler choice: the ...