Putting "Ears" on a Microscope Lets Reseachers Listen to Bacteria

The invention of the microscope allowed scientists to peer into the tiniest of cells. Now, imagine a device that can not just look into minute cells, but can also listen in on their activities. A team of scientists is building a "micro-ear" that uses tiny beads and lasers to amplify and measure vibrations on a molecular scale. The team hopes the new device will become standard lab equipment soon, allowing scientists to