The official statement issued by the IPCC on 20 January 2010 noted that a paragraph in the 938-page Working Group II contribution to the underlying assessment refers to poorly substantiated estimates of rate of recession and date for the disappearance of Himalayan glaciers. In drafting the paragraph in question, the clear and well-established standards of evidence, required by the IPCC procedures, were not applied properly. It emphasised that the paragraph did not affect the conclusion in the final summary for policymakers in the 2007 report, which it described as robust, appropriate, and entirely consistent with the underlying science and the broader IPCC assessment, and reaffirmed a commitment to absolute adherence to the IPCC standards. The IPCC also stated that it did not change the broad picture of man-made climate change. This was confirmed by Wilfried Haeberli, who announced the latest annual results of the World Glacier Monitoring Service. He stated that the important trend of 10 years or so showed an unbroken acceleration in melting and on expected trends, many glaciers will disappear by mid century. Glaciers in lower mountain ranges were the most vulnerable, and while those in the Himalayas and Alaska could grow in the short term, in a realistic mid-range warming scenario they would not last many centuries. Mojib Latif, a climate scientist who contributed to the report of Working Group 1, sees the consequences of the glacier data mistake but also the need to continue focusing on global warming.