In this video, we explore some of the largest creatures to ever roam the Earth—animals so massive that their size seems almost unbelievable. From the massive blue whale, the largest animal ever known, ...

What is the largest organism? Until a few years ago, Oregon’s “humongous fungus” was considered the world’s largest organism.

This blue whale skull is one of the largest in any collection on earth. Chris Gunn By the turn of the 20th century, the United States National Museum—now the Smithsonian’s Arts and Industries ...