The Committee on Climate Change has warned that we are not doing enough to adapt to the effects of a warming climate.
"In the U.S., Australia and Europe, there's a very substantial capacity to adapt to the effects on food — with money, technology, research and development.
Developing nations say they need to adapt to the effects of climate change and pay for cleaner, low-carbon energy technologies.
The accord calls for the establishment of the Copenhagen Green Climate Fund to support immediate action to help curb emissions and to help communities adapt to the effects of global warming.
Bull urged the energy and climate change secretary, Ed Davey, attending a conference in Ireland on hunger and climate justice, to commit the UK's fair share to international funds to help children adapt to the effects of climate change.
But the move marked the first formal recognition that rich countries responsible for the vast majority of accumulated greenhouse gases will need to pick up the bill to help poor countries adapt to the effects of climate change.
More than three-quarters of the money was used for activities to cut greenhouse gas emissions, with about a sixth going to projects to help countries adapt to the effects of climate change.
Stern said the US was willing to see "a mechanism, an arrangement, an entity" but he made it clear that this should come under the existing arrangements for helping poor countries to adapt to the effects of climate change.
He added that more money must be directed to helping poor countries adapt to the effects of climate change – this had been, to date, the "poor relation" of climate finance, he said.
Seventeen finance ministers, leading economists and heads of state say that it is "challenging but feasible" to raise $100bn£62bnbn) a year by 2020 to allow poor countries to adapt to the effects of climate change and reduce emissions.
At Cancún in 2010, developed countries pledged $100bn a year by 2020 towards the Green Climate Fund GCFF) to help developing nations adapt to the effects of climate change – but little of that has yet materialised, with delivery mechanisms still to be decided.
