southern madagascar is one in such areas. added to the problem affecting the madagascar the environment. they are trying to help people with dry conditions and the scarcity of water. ♪ >> balbob trees are made to last. they have been planted for 3000 years. this is one of the driest corners of the island. a tree can go three years without water. humans cannot. the parts of the plateau where water is to be found tend to be the most densely populated. everyone gets their water from this well and these days is not nearly enough to go around. by the afternoon, the well is empty. people are worried. there has always been bad years, they explain, years when it did not yield much but never one after the other. if things carry on like this, they don't know what they will do. >> it has hardly rain here at all since 2009. there were huge cyclos that brought a little rain but 2009 was dry and so was 2010. it was a complete disaster for the people. >> if there is no rain, there is no harvest. that means there is not enough to eat. souther