According to a new study, there is a clear correlation between the month you were born and how smart you are. Researchers found that students born in September are more likely to have higher grades than those born in any other month. Of course, the month of birth has nothing to do with brainpower. Instead, the school calendar is set up to give kids born around this time an advantage because they’re just a bit older than their peers, which helps them excel. (Travel + Leisure)