Has the time come for Business to step up? Is the momentum shifting where businesses recognise that they can’t keep doing what they’ve always done…they have to start thinking about the bigger picture and how that what they are doing has environmental and social impact. Liz Cameron-Smith recognised several years ago that something needs to shift, and so went out about creating  the Impact Assembly, a social venture designed to enable collaboration for social change. But she did all of that within the confines of one huge worldwide business, PWC. The work they are doing is all about collaboration and it's tackling big big issues but...it's having real impact.