BRUSSELS, April 6 (Xinhua) -- A U.N. conference on climate change approved a report on Friday on the impacts of global warming, warning that any deterioration in global warming will threaten the earth and human beings.

    Unless actions are taken to lessen the impact, climate change will result in a series of problems, including increasing poverty and a host of vanishing species, the report said.

    The approval came after a five-day set of discussions attended by experts and government delegates from more than 100 countries.

    "We have just completed a marathon meeting. It was a productive but tiring exercise," the Intergovernmental Panel on Climate Change (IPCC) chairman Rajendra Pachauri told reporters.

    "In the end we have what I think is a very good document," he added.

    The report assesses the latest scientific, environmental and socio-economic literature on climate change. It provides a comprehensive analysis of how climate change is affecting natural and human systems, what the impacts will be in the future and how far adaptation and mitigation can reduce these impacts.

    The report is part of the IPCC's first review since 2001 of the evidence of climate change resulting from human activities. It will become a guideline for governments to determine policies and draft legislation.

    The nearly 1,500-page report also contains chapters on specific regions for the first time, which are scheduled to be presented to the public in every region as from April 10.

    Delegates from more than 120 countries attended the conference, finalizing the wording of the draft prepared by scientific experts.

    It is the second of four reports by the IPCC, the world authority on climate change, this year. The first, issued in February, laid out the scientific case for how global warming is happening. Today's second report is on what the effects of global warming will be.