Environmentalists prefer plants and animals to humans. The latest proof? Through a panicky global-warming tweet from Think Progress blaring "Floods and heat cause mass Christmas Tree deaths," I came across a new cartoon drawn by veteran New York Times environmental reporter-turned-"Dot Earth" blogger Andrew Revkin. Revkin had several pine trees driving a car with a balding white guy tied to the car top. "What would the next few weeks be like if the trees had a holiday for a change?"