It didn't come as a surprise to researchers that the re-introduction of wolves in certain parts of the northern U.S. would reduce deer and elk herds, and thus reduce automobile accidents with those ...

Since the mid-20th century, the constant regrowth of trees in arid areas has shown signs that the environmental climate was recovering, providing an opportunity to understand how climate, soil and the ...

Over the last three decades, Yellowstone National Park has undergone an ecological cascade. As elk numbers fell, aspen and willow trees thrived. This, in turn, allowed beaver numbers to increase, ...