"Liespotting" author Pamela Meyer says we're facing an epidemic of dishonesty, when on any given day you may be lied to anywhere from 10 to 200 times ... Mistry's mind at this time, since he ...

It began posting video of the presentations online in 2006, and there are now more than 2,100 TED Talks that have been viewed well over a billion times. We've collected the 20 most popular ...