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0:24
Cal Fire Operations Captain says inmate firefighters make the department's work possible.
1:57
How the candidate echoed the conspiracy theorist on the campaign trail.
29:13
Deputy National Security Adviser
57:34
NSA cryptologist, 1964-01
56:50
NSA senior executive, 2001-08
46:00
He developed a test to assess whether football players should return after concussion.
37:29
He retired from the NFL career after suffering seven concussions.
46:22
Her research lab has discovered CTE in the brains of dozens of onetime football players.
17:29
Revisit a 2003 FRONTLINE/World report on the fight against SARS in Hong Kong.
4:30
The resurrection of Pebble Mine.
4:10
A smaller, environmentally friendly mine?
