And if you don't know, now you know Aug 30 2013
Dan Lewis is the director of new media communications at Sesame Street, which I'm sure is hard work but sounds like the best job in the world.
For years, he's also run a daily email newsletter called "Now I Know," featuring little science and history vignettes. For example, did you know... Abraham Lincoln signed the legislation creating the US Secret Service the day he was fatally shot... in order to investigate counterfeit money schemes. (Which is why the Secret Service was part of the Treasury department before being absorbed into Homeland Security.)
Now Dan has put those stories in a book, also called Now I Know, available for preorder for October 18. It's like a newer, less snarky iteration of Cecil Adams' The Straight Dope. Or, even better, Cliff Clavin's CliffsNotes.
PS: Tell me on Twitter: did Notorious B.I.G. really coin (and not just popularize) "and if you don't know, now you know" with "Juicy"? I swear, as a younger teenager pretty much immersed in hip-hop, I remember that that specific phrase being in the air or even in a song or by a comic or DJ well before 1994. But it's in that weird window of 1990s history where Google gets all tangled and useless. You know, this is the sort of question I should probably be asking Dan Lewis.