Report summary

Columbia University Department of Environmental Health Sciences Mailman in 2015-2026 reads as a 62-PI network with 247 internal PI collaborations. The dominant subject mix is Environmental Science as the leading field (33% of slots across 40 PIs; 40 labels), Health, Toxicology and Mutagenesis as the leading subfield (23% of slots across 33 PIs; 33 labels), and Air Quality and Health Impacts as the leading topic (9% of slots across 15 PIs; 15 labels). That is promising: collaboration is not just one large hairball, and the leading breakdown groups cover 18 PIs across distinct clusters. The leading PI names are Mary Beth Terry (51.9 weighted works; Cancer Risks and Factors, Global Cancer Incidence and Screening). The most visible ties are Ana Navas‐Acién and Anne E. Nigra (41 shared works, weight 25.7); Jeffrey Shaman and Sen Pei (38 shared works, weight 23.1). The leading breakdown groups are group 1 with 7 PIs, 7 internal connections, weight 63.5, around Health, Toxicology and Mutagenesis, Speech and Hearing, Physiology, led by Frederica P. Perera, Matthew S. Perzanowski, Julie B. Herbstman.