In marking World Environment Day which is observed every year on 5 June this year's theme, Ending Plastic Pollution, an urgent call is made about plastic waste choking our planet and threatening human health. A global study by the University of Newcastle for the World Wide Fund for Nature reveals a disturbing truth: we may be ingesting up to 5 grams of plastic each week, equivalent to the weight of a credit card. Doctors Without Borders says The time for bold, urgent action is now. For more on this, Elvis Presslin spoke to Neo Tsotetsi, Climate Engagement Coordinator at Doctors Without Borders.