When you’re looking to reflect on historical moments you might turn to a museum or galleries, but two teenagers are trying to make Twitter a digital center for nostalgia. The Atlantic has profiled two teenagers: Australian 17-year-old Xavier Di Petta and 19-year-old student Kyle Cameron from Hawaii both met on YouTube four years ago. The pair have created the popular @HistoryInPics Twitter account, and publish historical photos nearly every hour of the day. Di Petta argues, in an interview with The Atlantic, that it’s not practical to seek the permission of photographers.