AUTHOR=Mi Junlong , Yang Xing , Huang Feifei , Xu Yufa TITLE=Geopolitical, economic risk and the time-varying structure of extreme risk in the carbon emissions trading market JOURNAL=Frontiers in Environmental Science VOLUME=12 YEAR=2024 URL=https://www.frontiersin.org/journals/environmental-science/articles/10.3389/fenvs.2024.1499743 DOI=10.3389/fenvs.2024.1499743 ISSN=2296-665X