This week on World Ocean Radio we're defining "backwash" as the movement of water for filtration, for desalination, and for clearing of debris and toxins, and we're discussing methods that clean and protect Nature, using the strategies of bio-remediation to detoxify and cleanse against the human-caused destruction of natural systems.

Peter Neill, Director of the World Ocean Observatory and host of World Ocean Radio, provides coverage of a broad spectrum of ocean issues from science and education to advocacy and exemplary projects. World Ocean Radio, a project of the World Ocean Observatory, is a weekly series of five-minute audio essays available for syndicated use at no cost by college and community radio stations worldwide.

World Ocean Radio is produced in association with WERU-FM in Blue Hill, Maine and is distributed by the Public Radio Exchange and the Pacifica Network.

World Ocean Radio: 5-minute weekly insights in ocean science, advocacy, education, global ocean issues, challenges, marine science, policy, and solutions. Hosted by Peter Neill, Director of the W2O. Learn more at worldoceanobservatory.org