How a Seashell Helped Deaf People Hear

I've written often here about the remarkable ways shellfish have altered the course of human history.  So I was intrigued to see a recent interview about how a shell inspired the invention of cochlear implants.  It appears in the Aussie magazine Cosmos, where I am an occasional contributor.  Here's an excerpt:

During one Melbourne summer in 1977, he took his young children to the beach to escape the heat. While they were playing in the shallows, Clark noticed a seashell lying on the ground...