This story appears in the September 2019 issue of National Geographic magazine. In the blue light of an early Arctic morning, seven wolves slid across a frozen pond, yipping and squealing and ...

This story appears in the March 2010 issue of National Geographic magazine. Wolves, when you get down to it, are a lot like us. They are powerful, aggressive, territorial, and predatory.

When hydrologist Bob Beschta arrived in Yellowstone in 1996, he noticed something odd with the Lamar River. The stream was over-widened, the banks were eroding and precious soil was sloughing off ...