Several speakers expressed concern about U.S. President Donald Trump's denial of climate change, Vice President Mike Pence's creationist beliefs, and Trump's willingness to work with
prominent antivaccine activist Robert Kennedy Jr. «In the face of fanaticism and fear, science is regaining its
ethical and political
stance,» said Rosaura Ruiz Guitiérrez, director of the Faculty of Science at the National Autonomous University of Mexico here.