Meet the pikas. They're cute little things, aren't they? Think of a rabbit, but with shorter legs, a stubbier tail and softer fur. They are to be found in rocky mountainous areas across North America, ...

Early one August morning, on a rocky slope high in Montana’s Gallatin Range, biologist Chris Ray crouched on a boulder with a tiny, sedated furball in her hands. Ray has long, wavy salt-and-pepper ...