In this Planet Earth podcast, Sue Nelson goes to the Eden Project in Cornwall, southwest England and to the South Downs in southeast England to find out what butterfly research is telling us about climate change. As you might expect, there's some bad news to report, but surprisingly there's also hopeful news - at least for the silver spotted skipper. Meanwhile Richard Hollingham goes to Plymouth - also in southwest England - to hear how long-term monitoring buoys in the English Channel have helped reveal, among other things, that the water has gradually been getting warmer.