By Monica Charsley Prince Harry could face pressure to step down from the board of an African conservation charity after it was hit with a series of abuse allegations. Current and former staff at African Parks have lifted the lid on what happens behind the scenes and claimed that armed rangers use torture methods to extract information from poachers. Author Olivier van Beenman conducted interviews as part of a three-year investigation into the organisation – which receives funding from British aid, US billionaires and celebrities. His new book called, Entrepreneurs in the Wild revealed the ext…