By 2020, climate change is projected to expose an estimated 75 million people in Africa alone to increased water stress.Citizens against Climate Change in Nigerian (CACCIN), in a statement signed its CEO, Olusoji Daomi, said towards the end of the 21st century; a projected sea-level rise will affect low-lying, heavily populated coastal areas like Lagos and other Niger Delta state in Nigeria.

"Adaptation costs could amount to at least 5-10 per cent of GDP. New studies confirm that Africa is particularly vulnerable to climate variability and change due to its multiple stresses and low adaptive capacity.

"The droughts that decimate a village's food and water supply create aching hunger, to be sure - but hunger alone is just one facet of this terrible story. A hungry family may not be able to send their children to school or afford health care. Hunger may drive families out of their homes, creating an environment that fosters crime.