Correction to: Ambio (2021) 50:539–543 https://doi.org/10.1007/s13280-020-01416-7

In the original article, on the second page, right hand column I incorrectly noted that the person visiting Max Blumer’s laboratory who had spoken to me about PCBs interfering with their polycyclic aromatic hydrocarbon analyses in sediments, was Manfred Ehrhardt. It was Walter Giger who had spoken to me (e.g., see Giger and Blumer 1974). Both Walter and Manfred were visitors in Max Blumer’s lab during my first years at WHOI. Both provided helpful guidance and advice at the beginning of my career at Woods Hole Oceanographic Institution. I apologize to both for this error.