Hayden Panettiere's Halloween costume really is the cat's whiskers. The 25-year-old pregnant star took to Twitter on Friday to share a rather scantily clad snap of herself dressed up as a cheetah ...

But in one remarkable wildlife encounter, a mountain lion found itself face to face with an unexpected adversary — a skunk. However, in the video by Parliament of Owls, the skunk didn’t seem at all ...

A clinical trial is defined by NIH as a research study in which one or more human subjects are prospectively assigned to one or more interventions (which may include placebo or other control) to ...