The U.S. is categorized as low risk , although some coastal regions , including Florida , Louisiana , Georgia , North and South Carolina were rated as `` high risk . '' New Horizon assesses vulnerability of different regions to climate change effects . Countries with fastest growing populations most at risk from environmental impacts . Megacities in Asia and Africa most threatened including Nairobi and Addis Ababa . United Nations launch youth focus on achievement of seventh world population target .
New Horizon assesses vulnerability of different regions to climate change effects . Countries with fastest growing populations most at risk from environmental impacts . Megacities in Asia and Africa most threatened including Nairobi and Addis Ababa . United Nations launch youth focus on achievement of seventh world population target .