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 2:52 Severe weather kills at least 5 as tornadoes rip through Midwest and South 0:48 World Central Kitchen to resume operations in Gaza 8:39 Gina Rodriguez gushes 0ver motherhood with son Charlie 2:22 Scarlett Johansson and Colin Jost have date night at White House Correspondents' dinner 1:37 Pro-Palestinian protesters gather outside White House correspondents' dinner