Caroline Anning from the charity Save the Children has warned the situation in South Sudan is similar to the east African famines in the 1980s.
Speaking to ITV News' Dan Rivers she said: "If it continues and we can't get the help we need, we could be looking at a catastrophic famine."
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Jamaican sprinter Usain Bolt has met the cameraman who crashed into him on a Segway.
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Here is a summary of what we know so far following the discovery of 71 bodies in the back of an abandoned lorry in Austria yesterday.