To kick start this weeks show we have Sir David Attenborough talking about the year of the Salmon and the challenges this keystone species faces. We were lucky enough to work with him in London to make a film for Salmon and Trout conservation. For the rest of the show we are back home in Scotland, talking with Mark Purrman-Charles from the Scottish Invasive Species Initiative. From American mink to Himalayan balsam, we discuss the implications and effects of invasive non-natives, and the work being undertaken to tackle the problem. More than that, there is a way you, the listener, can get involved.

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