As human populations expand and lions’ prey dwindles, the poorest people—and hungriest lions—pay the price.
An Internet guide to tracking and tagging the animal world
Peaks protected fifty years ago by the Wilderness Act no longer keep mountain goats safe from human impact.
By the 1920s, California had lost all of its grizzly bears—once considered a distinct species and an emblem of the state.
Preconceptions skew our view of the biggest killer in the developed world, atherosclerosis.