Quiz: How Much Do You Know About Presidential Food?

Is a kiss really just a kiss? In this one-minute video, our Ask Smithsonian Host, Eric Schulze, explains why we pucker up.

Ask Smithsonian: Why Do We Kiss? (1:11)

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)

With the development of better flight technology, commercial air travel received an unprecedented boom in the 1960s. But to fully sell the glamor of flying, the airlines needed these women on board.

Air Travel Was a Party, and They Were the Hosts (2:57)

In 1828, John Jacob Astor built a trading post on the Missouri River. Business was so profitable that it only took four decades for Astor to become America's first multimillionaire.

America's First Multimillionaire (2:49)