Facebook says that it has banned $60 billion worth of fraudulent accounts from its platform.The social network has shut down more than a million accounts since September 2016, when it released a new security feature that would require a user to register and login before they could see any of their friends or contacts' posts.However, the move did not stop users from sharing and selling items and sh...
How to know when to look at the history and impact of the polio vaccine, the first of its kind?
Today’s podcast features history’s greatest mystery: when did the vaccine become the deadliest and most deadly vaccine in history?
We asked historian David Crouch to explain.
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