This post has not been vetted or endorsed by BuzzFeed's editorial staff. BuzzFeed Community is a place where anyone can create a post or quiz. Try making your own!Buzz·Posted on Jan 5, 201050 Things We Didn't Know This Time Last YearScience has been really busy!by Amanda DobbinsCommunity ContributorLinkFacebookPinterestTwitterMail 50 Things We Didn't Know This Time Last Year att.net Numbers 3 and 50 should be particularly helpful to you this week.