The greenhouse effect is always reported as being a negative consequence of current human lifestyle practices. However there certainly have been numerous suggestions of positive consequences of the greenhouse effect. A slight temperature increase in some of the colder parts of the world may improve conditions for agriculture and changing rainfall patterns may favor some species over others. However, they do not balance with overall negative impacts. The social, economic and ecological disorders brought about by such climatic changes worldwide are projected to greatly outweigh regional benefits.
The impacts of global warming and climate change could become a source of increased tension between nations and regions. While the developed, industrialized world is responsible tor 75% of all CO2 emissions, these impacts will most likely hit hardest upon the poorer, underdeveloped parts of the world. For example, as sea levels rise countries like Bangladesh will suffer much more from the loss of valuable and populated lands than European or North American countries, even though they have emitted only a tiny fraction of the greenhouse gases.
The effect of drowning coastlines could lead to hundreds of millions of climate refugees. Where will these refugees go?
How will they be cared for? Undoubtedly, such a disaster will seriously worsen the already critical refugee problem in the world. A severe disorder of the world's food supplies through floods, droughts, crop failures and diseases brought about by climate change would lead to famines, wars and civil disorder in many countries.