Leading ports, banks, oil and shipping companies on Monday launched an initiative which aims to have ships and marine fuels with zero carbon emissions on the high seas by 2030, in another step by the maritime sector to reduce carbon dioxide (CO2). International shipping accounts for 2.2% of global CO2 emissions and the UN's International Maritime Organization (IMO), has a long-term goal to cut greenhouse-gas emissions by 50% from 2008 levels by 2050.
