Darren Wershler-Henry, a professor of Communications, pays tribute to the whack of metal against paper, the smell of ink, and a technology we've almost forgotten. Produced by Zeke Turner.

Kevin Kallaugher, better known as KAL, has been the cartoonist at The Economist for 30 years. He explains how the donkey and elephant came to represent the parties, and charts their evolution in our culture. Produced by Gretta Cohn.

Historian Larry May slips into one of his favorite places -- the movie theater. Produced by Michael May.

Lifelong baseball fan and graphic designer Steven Heller looks at the most American piece of headwear -- the baseball cap.

Early humans hollowed out gourds to carry their water. Today we drink melted icebergs housed in crystal-studded bottles. Is this progress? Elizabeth Royte tracks the evolution of the water bottle. Produced by Catherine Epstein.

Today rock band T-shirts are sold at major retailers, to kids who weren't alive when classic rock was born. But when music writer Johan Kugelberg was growing up in Sweden, wearing the Sex Pistols or Ramones on your chest was its own act of rebellion. Produced by Andrea Silenzi.

Tea historian Jane Pettigrew explains why the world has never recovered from an American innovation. Produced by Deanna Kashani.

If you're heading outside for a picnic this weekend, don't forget your box of wine. That's right, box. It may call to mind sorority parties and bad hangovers, but design curator Ellen Lupton thinks that boxed wine deserves a second look. Produced by Katie Rolnick.

Almost 100 years ago, the Leica camera changed the world of photography. It was the first practical 35mm camera, and it has inspired passion in those who shoot with it. In Design for the Real World, photojournalist Deborah Copaken Kogan - the author of Shutterbabe - explains what makes the Leica so special. Produced by Dennis Nishi

Curator Paola Antonelli remembers how the tiny, energetic Superball made havoc in classrooms and workplaces.