Attack on a beach. And scientists rush to antartica to catch a glimpse of a giant iceberg before it melts. Good evening and welcome to bbc news. The deputy chief executive of oxfam has resigned following allegations the charity tried to cover up the full details of a sex scandal in haiti involving its aid workers. Senior figures in the organisation have been meeting the International Development secretary, offering assurances over the future handling of Sexual Misconduct allegations. The charity has been asked to produce all its evidence relating to what happened during the humanitarian relief effort after the haitian earthquake in 2010. Our special correspondent lucy manning has the details. Haitis red light district. Prostitution is illegal here, but that didnt stop some of oxfams staff. The charity now admitting it knew knew about concerns about its team and prostitutes, not just in haiti, but also in chad and that nothing was done. Widza bryant worked in Human Resources in haiti fo