Effective laws needed to protect large carnivores from extinction

Effective national and international laws are needed to reverse the decline of populations of large carnivores—such as tigers, wolves, and eagles—and reduce their risk of extinction, reports a paper published in Scientific ...

Mastodons took frequent trips north when climate changed

New research suggests that American mastodons were avid travelers, migrating vast distances across North America in response to dramatic climate change during the ice ages of the Pleistocene. The study, conducted by an international ...

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