Before Helios can come into existence, the old State Health Lab has to come down. The site looks like a bomb hit it, especially now when there's only a bay left (amid a sea of rubble). There's a lesson here about sustainability - the Lab was built for the ages, but not designed for them. Its inflexibility pretty much ruled out its reuse. This is often the case for concrete-frame buildings of the 1950s and '60s. What's replacing them isn't just higher-tech: one underlying assumption is that much will change; another is that it will all come down, too, at some point, and be easier to take apart and recycle or reuse. The old lab has clearly been a bear to demolish.