Buzz·Updated on Dec 19, 2017Flash Briefing For December 19, 2017The latest on the Washington train derailment, a Puerto Rico update, and a meme retrospective.by alexaflashbriefingBuzzFeed ContributorLinkFacebookPinterestTwitterMail Here's what you need to know today. Your browser does not support the audio tag. BuzzFeed News / Via buzzfeed.com