This undated photo provided by the National Security Agency (NSA) shows its headquarters in Fort Meade, Md. - 

There have been a lot of headlines about government surveillance this week, but we're following two in particular. Newly revealed documents published by The Guardian newspaper suggest deeper and more widespread NSA surveillance of emails and chat messages. And Oakland, California has approved a plan for a new local surveillance center. 

Cyrus Farivar, senior editor at Ars Technica, joins Marketplace Tech host Ben Johnson to discuss. Click on the audio player above to hear more.


Follow Ben Johnson at @@TheBrockJohnson