AUTHOR= TITLE=Retraction: Investigating relationships between tourism, economic growth, and CO2 emissions in Brazil: an application of the nonlinear ARDL approach JOURNAL=Frontiers in Environmental Science VOLUME=Volume 13 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/environmental-science/articles/10.3389/fenvs.2025.1675456 DOI=10.3389/fenvs.2025.1675456 ISSN=2296-665X