Proc. Natl Acad. Sci. USA 106, 20675–20680 (2009). Bentham, J. et al. Multidimensional characterization of global food supply from 1961 to 2013. Nat. Food 1, 229–237 (2020). Huang, X. and Nemecek, T. Add to racial–ethnic disparities in air pollution exposure. NBS China Statistical Yearbook 2017 (China Statistics Press, 2018).