Overview: On today's Daily Planet we are all about innovative building. Put your hard hat on and follow us behind the scenes in Vancouver where the new BC Place retractable roof is ready to be unveiled tomorrow. We skip across the pond to check out a fusion of art and engineering on a structure for London's 2012 Olympics and we look at how an urban flight school has taken over a city square here in Toronto. Alan Nursall is back and he's got a 'golden' opportunity to do some hands on metalwork.