(Qi Yang/Moment/Getty Images) Sound waves already used in medical scans may have a surprising new target: viruses. In lab experiments, scientists have demonstrated how ultrasound blasts can break down ...

Yushun Zeng squishes cancer cells in a petri dish at work. No, not with his ungainly, macroscopic human fingers. Zeng, an engineering graduate student at the University of Southern California, has ...

We can hear sounds because our ears turn sound vibrations from the air, into signals that are sent to our brain. We can’t hear all levels of sounds. Sound waves with very high frequencies are called ...