May 6, 2014 4:24 am Fallon Combines Pop Culture and Math in “Popular Mathematics” After hearing that Americans are ranked 30th in the world in terms of math skills, Jimmy Fallon decided to express equations using pop culture. US & World Videos 1:45 NYPD enters Columbia University in riot gear to clear protest 3:21 Katy Perry's surprising regret about cheeseburger Met Gala look 4:28 ‘Apples Never Fall' and ‘Jurassic Park' star Sam Neill reveals his real name 2:04 Arrests made, camps removed during pro-Palestinian protest at UConn 1:01 Biden administration plans to reclassify marijuana as a Schedule III drug