Published online: 4 May 2007; | doi:10.1038/news070430-11 /
http://www.nature.com/news/2007/070430/full/070430-11.html
Tackling greenhouse gases looks to be affordable
International report sets out costs of bringing down global emissions.Michael Hopkin
Bringing
greenhouse gas emissions under control looks to be both achievable and
affordable, on the basis of the most recent report of the
Intergovernmental Panel on Climate Change (IPCC).
Today
marks the end of an often fraught week of talks by the IPCC's Working
Group III, which evaluates strategies to counter the rising levels of
greenhouse emissions.
Their summary report,
released in Bangkok, Thailand, says that stabilizing atmospheric
greenhouse gases at a level likely to avoid the worst effects of global
warming would cost no more than 3% of global economic productivity by
2030 - an average of 0.12% per year.
This
is cheaper than many observers had expected it to be, and most see it
as affordable; environmental groups represented on the panel, such as
Greenpeace, have called it a small price to pay.
But
US officials say that this would lead to a global recession, and argue
that greenhouse levels should be stabilized at a higher level. "This
report underscores the importance of a strong curve of emissions
reductions," says James Connaughton, chair of the White House Council
on Environmental Quality. "But no world leader will pursue a strategy
that would lead to economic recession."