tom, leader of kiribas. a very small nation in the south pacific. for him if warming goes above 1 funny 5 degrees, his nation will disappear under water. people like him, people from the maldiv maldives, they're here for the survival of their impeople. we're seeing more floods, more droughts more, extreme storms. everybody who comes here has more specific examples of how warming is going to affect them. >> and certainly your organization works so hard on fighting deforestation. and a some people may be surprised to hear that despite your good efforts, so much of the rain forest are still going. how does that impact global warming. >> well, deforestation is a critical issue when we talk about climate change. right now deforestation is responsible for about a fifth of climate change, global warming emissions around the world.