Meet young Alexis Martin, possibly one of the smartest 3-year-olds on the planet. Alexis is so smart, that she literally measured off the charts of a standard IQ test, leaving doctors to estimate that her IQ is somewhere in the neighborhood of 160. As Gawker points out, that’s the “same score as Albert Einstein and Stephen Hawking.” Along with geography—she can label countries around the world on a map—she has also mastered Spanish (teaching herself from an iPad), memorizes bedtime stories and has even become Arizona’s youngest Mensa (an organization for super smart people) member. You can watch her adorable interview over on ABCnews.com …