Activist: "Your cows are putting carbon into the atmosphere." Farmer: "Where did they get it?" Activist: "What?" Farmer: "The carbon. Where did the cows get it from before they put it anywhere?" Activist: "From... eating grass?" Farmer: "From eating grass. And where did the grass get it from?" Activist: "From the soil?" Farmer:   “where did the soil get it from?” Activist: “From the air?” Farmer: "Yes. The grass pulled it out of the air last spring. The cows...