Exploring glacial caves, the fight over meatless lunches and Niger Delta women stand up to oil pollution

This week on Living Planet, stories of how local movers and shakers deal with global problems. Glaciologists in Oregon tell us what they've learned about the climate from frozen caves, while a community in Lyon, France protests meatless school lunches. We also debate the ethics of traveling by cruise or by plane. And women from the Niger Delta share their fight for justice over oil pollution.