A portable device developed by researchers at the Jet Propulsion Laboratory can be used by rescuers to scan rubble with microwaves after a disaster to detect human heartbeats. The 20-pound Finding Individuals for Disaster and Emergency Response, or FINDER, senses the minute movements of the body "when your heart beats. As the microwave goes through things, we can see the skin moving and we look for those little tiny changes," said Jim Lux, the project's task manager at JPL.

Related Summaries