As climate change activists prepare for nationwide actions on Saturday, author and co-founder of the group 350.org, Bill McKibben has been touring the country to generate opposition to the proposed Keystone XL oil pipeline. This week he was in Fresno to talk about the importance of grassroots organizing to that effort. In an exclusive interview with Pacifica radio, McKibben talked about the impact of global warming on California’s Agriculture, and water supply and ecosystem. Vic Bedoian reports.