If you are a “lifelong learner” you should be learning new things all the time. I just learned that there is a holiday in the US called Leif Erikson Day. I am not sure why I didn’t know this already, but I learned it today thanks to Mental Floss (a great site, check it out.)
Christopher Columbus gets most of the glory as the European who “discovered” America, but it was Leif Erikson and the Vikings who were here hundreds of years earlier. In fact there may have been other Vikings in America before Erikson, or perhaps even other Europeans (St. Brendan the Irishman?) but Leif gets the credit. Learn more about Leif Erikson and the day named for him here.