#YuleTubeCalendar To celebrate our love of both science and music we’ve created an online advent calendar Check back each day in the approach to Christmas to reveal a new YouTube video which alludes to a science story from 2011. Can you guess which story we’re referring to? Leave your answers in the comments, or tweet using the hashtag #yuletubecalendar. We have also created some simple instructions if you would like to join the fun by creating your own calendar to share. You can add videos, images or even link to other blog posts to create your own round-up of 2011.