Reuters: Climate change will aggravate natural disasters and people in developing nations such as Dominica, Vanuatu, Myanmar and Guatemala are most at risk, a U.N.-backed study showed Thursday. It urged governments to invest hundreds of billions of dollars to curb mounting impacts of hazards such as cyclones, floods, droughts, landslides, earthquakes and tsunamis. quot;Risk is … felt most acutely by people living in poor rural areas and slums,quot; U.N. Secretary-General Ban Ki-moon wrote in …