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The research analyzes the Twitter network made up of users and their interactions during the Conference of the Parties (COP) COP15 held in Montreal from December 7 to 19, 2022. The main objective is to measure the characteristics of the network and identify the key players in the conversation and the main topics addressed. We also sought to recognize if there was any relationship between the format of the messages and the level of engagement. To carry out the analysis, we used a methodology that combined quantitative and qualitative social network analysis techniques. The results suggest that communication through Twitter was a key factor in the successful mobilization of the environmental movement during COP15 and in raising awareness of the need to take concrete actions to address climate change. Likewise, the highest engagement was generated by mostly critical and urgent messages, focused on the need to take concrete action to address the biodiversity and climate change crisis. This reflects a separation between the activism reflected in the network and the scientific and political leadership present at the Summit. [ABSTRACT FROM AUTHOR]

The article summarizes the book "Green Public Policies: Design, Analysis, and Implementation" coordinated by Rafael Aguilera and Rogelio López, which addresses the topic of environmental public policies and their importance in the academic field. It highlights the increasing relevance of these policies since 2010 and mentions research journals where studies on the subject have been published. The need for plural and participatory governance is emphasized, considering the rights of individuals and vulnerable populations. The importance of scientific research and academic activity in this field is also mentioned. Additionally, countries such as Sweden, Denmark, Norway, Finland, Brazil, Costa Rica, and Mexico are mentioned for their environmental policies and research in this area. The book "Green Public Policies: Design, Analysis, and Implementation" published by the Nuevo León Editorial Fund aims to analyze public policies from a green and environmental perspective, addressing the challenges and difficulties of designing and implementing these policies, as well as their historical background and contemporary theoretical debates. The water crisis is highlighted, and the importance of a legal and philosophical perspective in the analysis of these policies is emphasized. The book also suggests that citizen participation and shared decision-making are fundamental in the formulation of socio-environmental public policies. [Extracted from the article]

In September 2020, Xi Jinping announced China's commitment to reaching maximum carbon emissions by 2030 and carbon neutrality by 2060. This work aims to analyze the objectives and scope of these announcements, focusing not only on China's intention to present itself as a global leader in environmental matters, but also as a spokesperson for emerging and developing countries. At the same time, this announcement will be framed as the continuity of a state policy on environmental matters carried out since the 1990s, in line with the rise of China's international prominence. To do this, official documents and sources will be used, and it will be contrasted with the literature on the subject. Finally, it is proposed that the announced objective can be achieved, but under certain specific conditions. [ABSTRACT FROM AUTHOR]