We know about the damage that can be caused by the visible plastic debris which ends up in the world's oceans, threatening marine and animal life. But what can science tell us about the possible impact of waste plastic we can't see?
On Tuesday, June 18th, 2013, tens of thousands of kids and adults at aquatic facilities around the world united for the fourth year in a row to set a new Guinness World Record for the ‘World's Largest Swimming Lesson’.
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