A Venn diagram captioned: "In a survey of 250 European travelers, 93 have traveled to Africa, 155 have traveled to Asia, and 70 have traveled to both of these continents, as illustrated in the Venn ...

Social media users flooded timelines with ... or singing a slightly off-key version of “Wheels on the Bus.” “I love Venn Diagrams,” Harris said in one recirculated clip.