The absence of complete data on global desertification could lead to underestimating the severity of the problem, according to a speech presented at the U.N. Convention to Combat Desertification's 2nd Scientific Conference in Bonn, Germany. "These global maps often overlook areas that have a lack of data, which are often the poorest and most in need," said Klaus Kellner, a science and technology correspondent for UNCCD for South Africa.

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