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NASA tests new disaster recovery device that tracks human heartbeats

Rubble in a building collapse in Syria.
Rubble in a building collapse in Syria.
AFP/AFP/Getty Images

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This week, at least 355 people died when a 7.7 magnitude earthquake hit Pakistan. Rescue crews continue to search for survivors trapped in the rubble. The first and often most challenging step in recovering people from such situations is determining whether there is anyone to rescue.

A new device called the FINDER developed at the Jet Propulsion Laboratory aims to help by detecting heart beats underneath huge piles of rubble. The devices designer JPL's Jim Lux.