Galileo said we should, “Measure what is measurable, and make measurable what is not so.” This week on Sea Change Radio, we take a look at two ways that people are trying to apply that wisdom to climate change. First, we speak to Davida Herzl, the CEO and co-founder of Aclima, a San Francisco-based company that refers to itself as a “FitBit for the planet.” Herzl explains how Aclima’s technology works, how the company makes money, and the opportunities that lie ahead as the industry of measuring air pollution evolves. Then, we dig into the Sea Change Radio archives and re-visit our discussion with James Leaton, the research director of the Carbon Tracker Initiative, a British nonprofit that analyzes the risks of fossil fuel investment and presents findings to the financial sector, with the objective of limiting future greenhouse gas emissions.