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The article analyzes the mobilization of Spanish cities in the fight against climate change in the framework of the Covenant of Mayors, launched in 2008 in the European Union. Through the Covenant, cities commit to reduce greenhouse gas emissions as well as to improve their energy efficiency and increase the use of renewable energies. With more than 7,700 signatories, the Covenant is an interesting example of how cities have a decisive role In the fight against climate change and in improving the sustainability of cities. The article gives an account of concrete initiatives that Spanish cities have proposed to fulfill their commitments, ranging from the replacement of public lighting to the pedestrianisation of urban centers passing through areas the increase of green in cities. [ABSTRACT FROM AUTHOR]

El artículo presenta un editorial en el que el autor comenta sobre el estado actual de la Unión Europea. Discurre sobre la importancia de reconocer los valores, la solidaridad y la seguridad regional de los países miembros de la Unión. También se consideran las políticas asociadas con la protección del medio ambiente.