Scientists: Rivers in Africa, Asia Responsible for Most Ocean Plastic Waste

The equivalent of one garbage truck full of waste plastic is dumped into the world’s oceans every minute – or 8 million metric tons a year. New research suggests that the vast majority of that waste is transported to the oceans by just a handful of major river systems – and tackling the pollution at source would go a long way to cleaning up our seas. Henry Ridgwell reports from London.