Think of the environmental impacts of coffee, and your mind likely goes to mountains of coffee cherries polluting waterways, piles of leftover grounds, non-recyclable coffee pods, or the paper waste from gazillions of grande to-go cups. Initially, youre probably not considering milk at all.But consider this: milk represents 60 to 70 percent of the carbon footprint of a cup of coffee with a few tablespoons of milk; for a latte, its more like 80 or 90 percent. Per cup, black coffee produces 21 grams of CO2; each latte, 340 grams."When you figure a coffee shop makes 300, 500, 700 drinks a day, this becomes significant." - Robert Myers, co-founder of San Franciscos Paramo Coffee" - Take Part