Global warming could undermine poverty fight: World Bank

Climate change could undermine efforts to defeat extreme poverty around the globe, the World Bank warned Nov. 23.

In a new report on the impact of global warming, the bank said sharp temperature rises would cut deeply into crop yields and water supplies in many areas and possibly set back efforts to bring populations out of poverty.

"Climate change poses a substantial and escalating risk to development progress that could undermine global efforts to eliminate extreme poverty and promote shared prosperity," the report said.

"Without strong, early action, warming could exceed 1.5-2 degrees Celsius and the resulting impacts could significantly worsen intra- and intergenerational poverty in multiple regions across the globe."

The bank said it is already likely that average temperatures will rise 1.5 degrees Celsius from pre-industrial levels, based on the built-in impact of past and current greenhouse gas emissions.

That means that extreme heat events, sea level rise and more frequent tropical cyclones may now be unavoidable.

But without concerted action, the real danger is that the average global temperature increase could go to 4.0 degrees Celsius by the end of the century.

The bank called that "a frightening world of increased risks and global instability."       

"Ending poverty, increasing global prosperity and reducing global inequality, already difficult, will be much harder with warming of two degrees Celsius, said World Bank President Jim Yong Kim.

"But at four degrees, there is serious doubt whether these goals can be achieved at all."

The new report, "Turn Down the Heat: Confronting the New Climate Normal" focuses on the specific regional impacts of warming.