The scientific and environmental community were generally very critical of the book, in some cases harsh in both content and tone. Criticisms covered a wide variety of topics, including Lomborg's methodology, data issues and theories and concepts. The most common criticism were selective use of data, followed by issues with referencing, choosing arguments not representative of the environmental movement and addressing regional rather than global trends. The Union of Concerned Scientists published a critique of the book, highlighting reviews by Peter Gleick, Jerry Mahlman, Thomas Lovejoy, Norman Myers, Jeffrey Harvey, E. O. Wilson and Stuart Pimm. The UCS concluded that "The Skeptical Environmentalist fits squarely in a tradition of contrarian works on the environment that may gain temporary prominence but ultimately fail to stand up to scientific scrutiny." Harvey said that the book "has an undergraduate quality to it, but is this surprising considering that ecology is the most complex of sciences and that Lomborg has never done a shred of work in the field?” and “I would fail one of my undergraduate students if they were to write such trash". In a letter to Lomborg, Wilson said that "the greatest regret I have about it all is the time wasted by scientists correcting the misinformation you created.” The January 2002 issue of Scientific American contained, under the heading "Misleading Math about the Earth", a set of essays by several scientists, which maintain that Lomborg and The Skeptical Environmentalist misrepresent both scientific evidence and scientific opinion. The magazine then refused Lomborg's request to print a lengthy point-by-point rebuttal in his own defence, on the grounds that the 32 pages would have taken a disproportionate share of the month's instalment. Scientific American allowed Lomborg a one-page defense in the May 2002 edition, and then attempted to remove Lomborg's publication of his complete response online, citing a copyright violation. The magazine later published his complete rebuttal on its website, along with the counter rebuttals of John Rennie and John P. Holdren.Nature also published a harsh review of Lomborg's book, in which Stuart Pimm of the Center for Environmental Research and Conservation at Columbia University and Jeff Harvey of the Netherlands Institute of Ecology wrote: "Like bad term papers, Lomborg's text relies heavily on secondary sources. Out of around 2,000 references, about 5% come from news sources and 30% from web downloads — readily accessible, therefore, but frequently not peer reviewed." They continued