America's Most Valued Invention Isn't What You Think: The Surprising Power of Your Toothbrush

The Humble Hero: Why Your Toothbrush is the Most Powerful Invention You Own
In 2003, a Lemelson-MIT survey posed a fascinating question: Which invention could you not live without? The answers weren't the car, the personal computer, or the cell phone. The winner, by a significant margin, was an object so simple and commonplace we barely think about it: the toothbrush.




















