The Ozone Hole, Starlings in Fair Isle, Forest Fires

This week in the Planet Earth Podcast - Richard Hollingham talks to one of the scientists behind the discovery of the ozone hole to find why it's still there; how research on starlings on an island famous for its sweaters could help bird conservationists; and why forest fires in North America affect people thousands of miles away in Europe. Like this podcast? Please help us by supporting the Naked Scientists