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Philly Geologist Talks Quake
The Franklin Institute's Chief Astronomer Derrick Pitts, who is also a geologist, explains why we here in Philly felt the Va. earthquake and why aftershocks happened.
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Philly Geologist Talks Quake
The Franklin Institute's Chief Astronomer Derrick Pitts, who is also a geologist, explains why we here in Philly felt the Va. earthquake and why aftershocks happened.
Date: 8/23/11
Views: 91
Video by:  NBC Philadelphia
 
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