This article was originally published on mentalfloss.com as Can You Name the Original Capitals of These 18 States?. Harrisburg is the capital of Pennsylvania today—but it hasn’t always been.

An 18-month old boy can reel off the capitals of 50 countries and find 21 on a map. He is smarter than a fifth grader ... He can also point out on a map 21 different nations. Quick, what's the ...