Low-frequency signals reach this robot if it's underground or moving through heaps of rubble.<img src="http://feeds.feedburner.com/~r/DiscoveryNews-Top-Stories/~4/qaIOaMxLJ4s" height="1" width="1"/>
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Low-frequency signals reach this robot if it's underground or moving through heaps of rubble.<img src="http://feeds.feedburner.com/~r/DiscoveryNews-Top-Stories/~4/qaIOaMxLJ4s" height="1" width="1"/>