This document can also be found on the official website of Springer Nature: https://www.springernature.com/gp. The presence and accumulation of plastic and microplastic (MP) debris in the natural environment is of increasing concern and has become the focus of attention for many researchers. This review focuses on the occurrence, sources, and transport of MPs in terrestrial and aquatic environments to highlight potential human health effects, and applicable regulations to mitigate impacts of MPs. This study also highlights the importance of personality traits and cognitive ability in reducing the entry of MPs into the environment. This resource is part of the collection "Mitigating the Impacts of Oceans Pollution on Societies". Collections are monitored daily and new content is added.