In a warming world, who wins: goats or sheep? As the namesake ice of Glacier National Park in Montana recedes, it is exposing once unavailable salt deposits coveted by animals far and wide. Both ...

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That's pretty much the four-word summation of a new study looking at what happens when goats and sheep compete for salt licks – naturally occurring deposits of salt – above the tree line in Montana.

Peering through a spotting scope in Montana’s Rocky Mountains, conservation ecologist Joel Berger and his doctoral student Forest Hayes saw something strange. On a barren ridge a mile away, a bunch of ...