Climate change report urges cut in costs

Avoiding a global temperature increase of more than 2 degrees Celsius, which scientists regard as the safe limit, will be prohibitively expensive, while a far less ambitious target would produce a more cost-efficient result for the world economy, according to a new study.

The report, published Friday by the Copenhagen Consensus, a group of economists brought together by a Danish academic, Bjorn Lomborg, is at odds with the prevailing view that large sums should be spent over the next decade to ward off climate change.