 After its mention in the UK Parliament, TEQs became widely studied by research centres internationally, including the Environmental Change Institute (Oxford University), the Natural Environment Research Council, the Royal Society for the encouragement of Arts, Manufactures & Commerce and the Institute for Public Policy Research, among others.A number of academic papers were produced, followed by Mayer Hillman's book "How We Can Save The Planet".In 2005, David Fleming published the first edition of his popular guide to TEQs, "Energy and the Common Purpose" (now in its third edition).