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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]

The IPCC (Intergovernmental Panel on Climate Change) is a body created within the United Nations system in charge of the elaboration of reports in support of the different governments on matters related to Climate Change, its impacts and the adaptation and mitigation strategies. The paper analyses the background and reasons that lead to the creation of the IPCC, the main milestones in its lifetime and describes how it works. [ABSTRACT FROM AUTHOR]

The Paris agreement about climate change has meant an important step forward. Building up on these foundations the following years we should move towards a new GHG emission trajectory compatible with the security threshold of 1,5-2°C. The strategic position of the five biggest emitters of the world -China, United States of America, the European Union, India and Russia- it is going to be a decisive factor. The climate policies ant the respective diplomacy of these big players will define the success or failure of the climate challenge. We need to understand and analyse these climate policies in the context of their wider geopolitical frameworks. That is the way to understand the concepts, changes and strategies of these players. [ABSTRACT FROM AUTHOR]