This repository reproduces the analysis in
Song, Y., Millard-Ball, A., Fox, N., Van Berkel, D., Agrawal, A., & Zhu, K. (2026). Political ideology and scientific communication shape human perceptions of pollen seasons. PNAS Nexus, 5(1), pgaf386. https://doi.org/10.1093/pnasnexus/pgaf386