First Up - The Podcast, Wednesday 6 September

On today's First Up pod: we check in with our correspondents in Australia and Africa and check out cool auctions on TradeMe; concerns the US Tennis Open has become a superspreader event thanks to a spate of players falling sick with covid-like symptoms; we ask Green Party co-leader James Shaw about National's 'net zero by 2050' target and green crosses on farm fences -- food producers explain their silent protest. First Up - Voice of the Nathan!