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WASHINGTON - A leaked draft of an international scientific report forecasts that man-made global warming likely will worsen already existing human tragedies of war, starvation, poverty, flooding, extreme weather and disease.

The Nobel Peace Prize-winning Intergovernmental Panel on Climate Change will issue a report next March on how global warming is already affecting the way people live and what will happen in the future, including a worldwide drop in income. A leaked copy of a draft of the report's summary appeared online Friday. Governments will spend the next few months making comments about the draft.

The report details specific effects of warming and how countries and people can adapt to some of them. The American scientist who heads the report, Chris Field, says experts paint a dramatic contrast of possible futures.