For the poorest countries in the world, climate change means an additional threat which they must helplessly face. Besides underdevelopment, a scarcity of resources, sovereign debt, or overpopulation, climate change brings with it a further threat to livelihoods, and therefore to development potential. Scientific investigation into the consequences of climate change for nutrition, water supply, health, land, and ecosystems clearly reveal the negative consequences which result from the rise in the average global temperature.