# human behavior

Evidence from behavioral science, exposure research, and editorial audits converges on a single message: daily environments and fragile oversight now shape health and trust more than ideology or quick fixes. New data tie about two cups of caffeine to quieter motor signals, document near-universal PFAS in blood and independent cardiovascular risk from ultra-processed foods, and uncover thousands of AI-aided fabricated citations even as rigorous advances in virology and materials engineering proceed.

Across new studies, headline improvements mask complex trade-offs: record-low smoking coincides with nicotine migration, and a multivitamin trial failed to show benefits on hard outcomes. Climate work favors post-growth pathways as extreme ocean heat threatens fisheries, while social and developmental findings reveal how biology, behavior, and environment intertwine.