"How can we activate some of San Francisco’s stalled construction sites into spaces of beauty, inspiration and public use? What policy incentives are being used to make this idea attractive to landowners? Inspired by a series by the Chronicle’s urban design critic, John King, a handful of local artists and designers have developed innovative proposals for an urban farm, sculptural bird habitat and pop-up stores (to only name a few). Join us for a discussion with John Bela of Rebar, Douglas Burnham of envelope A+D, Sarah Keuhl of Peter Walker + Partners and Michael Yarne of the Mayor’s Office of Workforce and Economic Development. Moderated by John King."