Oxfam has estimated that developing countries will need at least $150bn a year to cope with the effects of climate change.
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The true cost of climate change will not be measured in money but in lives, which is already being paid, according to the development agency Oxfam.
In a new report, the agency has also accused rich nations of being woefully short on the action and ambition needed to reduce greenhouse gas emissions.
It says 26m people have already been displaced because of climate change and up to 375m may be at risk of climate change disasters by 2015.
In December, the world's governments will meet in Denmark with the aim of agreeing a successor to the Kyoto Protocol, and Oxfam clearly wants to pressurise them into action.
Oxfam says developing nations require $150bn a year and points out that this is the same amount which was spent on bailing out just one company, AIG, during the financial turmoil last year.
According to the World Health Organisation, 300,000 people die a year because of the effects of climate change.
