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UN plans to curb greenhouse emissions from ships

The United Nations maritime agency is holding a weeklong meeting aimed at curbing emissions from ships.

Environmental activists say that while shipping contributes only 2-3 percent of global greenhouses gases, the industry's efforts are essential to combating climate change.

Proposals at the International Maritime Organization meeting that began Monday in London include keeping emissions below 2008 levels, but some shipping nations oppose such a cap.

European Union members and other countries want a 70 percent to 100 percent reduction in greenhouse emissions by 2050. They cite a study which found that alternative fuels, wind-assisted ships and electric engines could replace shipping fuels without endangering global trade.

Proposals to cut sulfur oxide emissions and to extend to the Arctic a ban on heavy fuel oil that already covers the Antarctic also will be considered. 

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