Rocketboom is a three minute daily videoblog hosted by Joanne Colan and based in New York City. We cover and create a wide range of information and commentary from top news stories to quirky internet culture.Rocketboom field correspondent Tim Brunsden of Liverpool Stories speaks with David Allan about ‘Joyful Trees‘, an architectural art installation created by Diller + Scofidio + Renfro for the 2