Just as the protestors on Hamburg's streets have varied demands, so too do the leaders of the G20. The US, for example, wants more trade tariffs (especially on steel imports) - a policy that not all members agree with. We get the latest on the summit from our correspondent in Hamburg, Amir Paivar. London-based PR firm Bell Pottinger apologises after its social media campaigns caused offence in South Africa. Nikita Ramkissoon from the Save South Africa campaign tells us her objections to it. Plus, we meet the astronomer turned entrepreneur Dr Kim Nilson, whose company Pivigo matches data scientists with firms who need them. Susannah Streeter is joined throughout the programme by Peter Ryan, senior business correspondent for ABC in Sydney. (Picture credit Alexander Koerner/Getty Images)