Chinese dissident artist Ai Weiwei protests possible extradition of Julian Assange in LondonHealth Ministry admits failings in handling contracts it awarded to firm with links to Peeni HenareGovernment to spend more money on silt cleanGovernment continues funding free period products in schoolsCancer patients' travel funding boost: 'Important no one falling through the gap'Rising costs, working from home blamed for hospitality strugglesIowa caucuses: What Trump's dominant win means for his rivalsUS warns China will use Olympics to gloss over abusesMysterious 'Big Ring' found in space 'must surely be telling us something'Robyn Malcolm takes out best actress gong at France film festival