NCIS introduced Mark Harmon as Leroy Gibbs when it premiered on CBS two decades ago. A character that became iconic for ...

As "Alden Parker," actor Gary Cole is the new face of NCIS. Wondering where you've seen the star in the past? Here's a look ...

The Mariana Trench is the deepest place on Earth, and we're still in the dark about much of the life that calls it home. Here ...