More than five years on, studies suggest the animal is the most likely culprit, but other candidates haven't been ruled out.

Under existing state law, it's legal to run down predators like coyotes and wolves in most of Wyoming. Legislators are ...

The creature is being trafficked across Africa and Asia to fuel a steady demand for their scales, an ingredient in unproven ...

This story was originally published b y Vox.com a nd is reproduced here as part of the Climate Desk collaboration.