Reverse extinction: Should we redo the dodo?

Woolly mammoths stomp through the Siberian tundra as the giant moa strides the forest floor of New Zealand and Tasmania's dog-like "tigers" stalk their prey under the cover of night. This is not a snapshot of times past, ...

Beyond humans—mammal combat in extreme environs

A new study from the Wildlife Conservation Society (WCS), Colorado State University, and the National Park Service indicates previously unknown high altitude contests between two of America's most sensational mammals—mountain ...

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