A new report, National Security, the Assault on Science, and Academic Freedom, released by the AAUP details troubling threats to academic freedom in the physical and natural sciences that have been exacerbated by the Trump administration’s hostility to science. International scientific exchange and, especially, the charging of innocent Chinese or Chinese American scientists with espionage in the name of national security is one focus of the report. The second is climate science, which has been subject to vicious attacks that have intensified significantly under the current administration.