Climate Central: Cassandra Martin's journey as a community leader began in 2008 when she moved into an Oakland shelter after losing her job of 17 years. One of her roommates in the shelter went to an orientation led by the Environmental Indicators Project. She returned with a pamphlet that Martin remembers reading over and over. Within a few weeks, in early 2009, Martin was collecting environmental data alongside its two co-founders. "I really enjoyed the dynamic between them,' Martin says, "and no one had ever made...