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One billion toothpaste tubes end up in landfill each year and PM's Paddy O'Connell has been on a mission to find an alternative, and asked listeners to come up with ideas. When headteacher Dan Cundy got in touch, Paddy went to meet some of his year 10 students who were set the challenge of replacing the toothpaste tube. (Photo: Rough drawing of one of suggestions of an alternative toothpaste holder Credit: Southbank University Technical College)