The RA.One actor has joined a campaign to help cut thousands of easily-preventable deaths across the world through the provision of basic toilet facilities. He has been named a global ambassador for sanitation and hygiene as part of a United Nations-backed campaign to tackle diseases such as diarrhoea, which is the second-biggest killer of children worldwide. “It is shameful and tragic that every 30 seconds a child dies from preventable diarrhoea — that’s two unnecessary child deaths per minute,” Khan said in a statement released on Monday. “Toilets for all will make India and the world a healthier and cleaner place, particularly for poor women, girls and others at the margins of our societies,” he added. Khan’s new role comes as specialists and non-governmental organisations working to improve public health gather in Mumbai this week at a Water Supply and Sanitation Collaborative Council (WSSCC) conference.