From Our Own Correspondent

Kate Adie presents stories from Haiti, South Korea, the US, Senegal and the Vatican City.Haiti's government have declared a state of emergency after armed gangs attacked the country's airport and stormed two of the main prisons. Harold Isaac gives a first-hand account of the chaos that unfolded and how the capital went into full lockdown.South Korean women are increasingly shunning the dating scene and choosing not to have children. And the country's birth rate recently fell again, to just 0.72. This poses a serious problem for South Korea's economy and its security, with politicians describing it as a national emergency. But, as Jean MacKenzie finds, they've been unable to reverse the trend.Mouse Green travels on the freight trains criss-crossing the US, some of which stretch over two miles long. He meets members of the counter-culture community who call the rail cars home and uncovers a hidden world.Senegal has been a beacon of stability in the Sahel region, which has seen a series of coups over recent year