By Susan Paykin
How do we measure the true cost of carbon pollution? The answer has stumped scientists, lawmakers, economists, and religious leaders alike for decades. We can measure the cost of making increasingly acidifying waters potable. We can measure the rising cost of basic food staples, whose prices have skyrocketed in the last decade. We can measure the rise in cost of treating water-borne diseases, which are spreading to more places due to warmer temperatures.