such as solar photovoltaic plates, wind energy systems, and heat pumps; Improving the energy performance of cultural buildings by installing insulation, sealing gaps, reducing the number of windows and installing double-glazing: Using microclimates to house small groups of climate-sensitive objects instead of seeking to control the environmental conditions of the whole building. Country by country look United States Heritage Preservation, in partnership with the Institute of Museum and Library Services, a U.S. federal agency, produced The Heritage Health Index. The results of this work was the report A Public Trust at Risk: The Heritage Health Index Report on the State of America's Collections, which was published in December 2005 and concluded that immediate action is needed to prevent the loss of 190 million artifacts that are in need of conservation treatment. The report made four recommendations: Institutions must give priority to providing safe conditions for the collections they hold in trust. Every collecting institution must develop an emergency plan to protect its collections and train staff to carry it out. Every institution must assign responsibility for caring for collections to members of its staff. Individuals at all levels of government and in the private sector must assume responsibility for providing the support that will allow these collections to survive. United Kingdom In October 2006, the Department for Culture, Media and Sport, a governmental department, authored a document: "Understanding the Future: Priorities for England's Museums". This document was based on several years of consultation aimed to lay out the government's priorities for museums in the 21st century. The document listed the following as priorities for the next decade: Museums will fulfil their potential as learning resources (pp 7–10). Museums will be embedded into the delivery of education in every school in the country. Understanding of the effectiveness of museum education will be improved further and best practice built into education programmes. The value of museums' collections as a research resource will be well understood and better links built between the academic community and museums. Museums will embrace their role in fostering, exploring, celebrating and questioning the identities of diverse communities (pp 11–14). The sector needs to work with partners in academia and beyond to create an intellectual framework supporting museums' capacity to tackle issues of identity. The museum sector must continue to develop improved practical techniques for engaging communities of all sorts. Museums' collections will be more dynamic and better used