Six-Million-Year-Old Whale Fossil Discovered by NMNH Researchers in Panama

The hagfish is a slime-emitting ocean-dweller that's remained unchanged for 300 million years--and it shows. It has a skull (but no spine), velvet smooth skin, and a terrifying pit of a mouth that's lined with rows of razor-sharp teeth.

The Hagfish Is the Slimy Sea Creature of Your Nightmares (3:00)

One highly influential ancient Middle Eastern civilization established some of the essential systems we still use today. Think you know which it is?

Who Decided to Put 60 Seconds in a Minute? (2:33)

The superheros creator, William Moulton Marston, was a Harvard-trained psychologist and inventor and infused his daily life into the comic book.

The Origin Story of Wonder Woman (4:36)

Eric Green, director of the National Human Genome Research Institute, explains how genomics are revolutionizing medicine at Smithsonian's "The Future is Here" event

The Human Genome: Unlocking Life's Code (15:37)