Other emerging markets, and industrialised nations in Europe and North America will be affected as well.
Currently, the cuts pledged by industrialised nations are not enough to halt the overall global rise in emissions.
The US has yet to sign up to the Kyoto Protocol under which industrialised nations agreed to limit their greenhouse gas emissions.
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Activists criticise industrialised nations for failing to contribute enough money and blame pharmaceutical companies for the high cost of antiretroviral (ARV) drugs.
Emerging markets saw a return on aggregate capital of 13.3% over the 1994-2003 period, compared with 7.8% in the G7 group of industrialised nations.
He said developing countries have felt it is more important to deal with "known risks" than unknown risks like smallpox, while industrialised nations have different priorities.
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The organisation, set up by the G7 group of major industrialised nations, said seven countries had made substantial progress in countering money-laundering schemes - among them Israel and the Bahamas.
In the last 6 years, most industrialised nations have cut greenhouse gas emissions, but under George Bush, US emissions have increased by an average of 1% a year.
The gap between rich and poor widened more in the three years to 2010 than in the previous 12 years, the OECD group of industrialised nations has said.
It found the US had "by far the highest rate of first-day deaths among industrialised nations" - more than twice the amount (11, 300) of the entire EU (5, 800).
Mr Brown said that banning export credit guarantees for "unproductive expenditure" was an important step towards eradicating Third World poverty and urged other industrialised nations to follow suit.
The response of the international community to this threat would top the agenda during the UK's presidency of the G8 group of leading industrialised nations, Mr Cameron said.
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Environment ministers from the so-called G8 countries - comprising the seven leading industrialised nations plus Russia - agreed an initial compromise over action for countering global climate change.
The pact was made in 1997 in Kyoto, Japan, where industrialised nations agreed to cut greenhouse gas emissions by an average of five percent of 1990 levels by 2010.
In industrialised nations, such as the US and in Europe, many farms employ the services of commercial hives to pollinate fruit trees and food crops, and ensure they harvest adequate yields.
They are ubiquitous, in small amounts, in industrialised nations.
The Italians, who are due to host the G8 summit of industrialised nations in Genoa next month, will be watching particularly closely to see how Austria copes with the flood of demonstrators.
The G8 - Group of Eight - is made up of the world's leading industrialised nations and Russia some of the world's most powerful figures, including U.S. President George W. Bush, will attend the summit.
It is the world's biggest carbon emitter, it holds vast reserves of wealth but, although so far it has been shielded from the financial turmoil, orders for its various manufacturing centres are set to fall as a result of the slowing demand from the industrialised nations.
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