On a recent drive back from Denver International Airport, I saw a coyote running through a prairie-dog town. It was the fifth coyote I saw that morning between Estes Park and Denver, but this one ...

Dogs are a good model for studying human obesity because they develop obesity through similar environmental influences as ...

This story appears in the February 2015 issue of National Geographic magazine. Currently two species of face mites are known; at least one of them appear to be present on all adult humans.