Facial recognition technology is creeping into all aspects of life, and San Francisco could be the first city in the US to block it. Other cities are thinking of following suit -- we’ll explain why. Attorney General William Barr wants to know how the FBI’s Trump-Russia probe got started. And he’s calling for back-up: from the US Attorney in Connecticut. Also on today’s episode: a security flaw on WhatsApp could have given hackers your private info, and some pride for your favorite animated aardvark’s teacher.

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