Coastal ocean chemistry now substantially shaped by humans

A global analysis of more than 2,300 seawater samples from more than 20 field studies around the globe indicates that human-made chemicals make up a significant portion of organic matter in coastal oceans. The international study, led by biochemists Jarmo Kalinski and Daniel Petras at the University of California, Riverside, analyzed seawater samples collected over a decade from coastal regions from the Pacific, Atlantic, and Indian oceans.