Vaccine maker becomes China's richest man after wealth increases fiftyChinese dissident artist Ai Weiwei protests possible extradition of Julian Assange in LondonChildcare subsidies to start from July, families eligible for up to $75 a weekChina's population drops for 2nd year, with record low birth rateAuckland bus services disrupted by police search warrantVideo shows chaos at aid delivery on Gaza beachChinese dissident artist Ai Weiwei protests possible extradition of Julian Assange in LondonGreen Party activist puts forward radical manifesto in leadership bidIndustry body calls for consistency over agricultural spraying rulesBetter funding could prevent more drownings