Tiny ear listens to hidden worlds

Tiny dishes etched on microscope slides act like ear trumpets A micro-ear could soon help scientists eavesdrop on tiny events just like microscopes make them visible. Initially, researchers will use it to snoop on cells as they go about their daily business. It may allow researchers to listen to how a drug disrupts micro-organisms, in the same way as a mechanic might listen to a car’s engine to find a fault