Paul Johnston

TL;DR: This article provides a comprehensive overview of the types of PCDD/F contaminated sites that exist as a result of historical activities and details the various processes whereby these sites became contaminated and attempts to evaluate their contemporary relevance as sources of PC DD/Fs and other POPs.

TL;DR: A review of the current state of development of seabed mining activities in areas both within and beyond national jurisdictions is presented in this article, where the uncertainties and gaps in scientific knowledge and understanding which render baseline and impact assessments particularly difficult for the deep sea.

TL;DR: It is concluded that butter is sensitive to local, regional, and global scale spatial and temporal atmospheric trends of many POPs and may therefore provide a useful sampling medium for monitoring purposes, however, to improve the quantitative information derived on air concentrations requires an awareness of climatic and livestock management factors which influence air-milk fat transfer processes.

TL;DR: There is already a compelling case for urgent actions to identify, control, and, where possible, eliminate key sources of both primary and secondary microplastics before they reach the marine environment.