(Reuters) - Ben & Jerry’s has been sued by an environmental advocate who said it deceived consumers by touting that the milk and cream it uses to make ice cream came exclusively from “happy cows.” In a complaint filed last week, James Ehlers said Ben & Jerry’s “breached consumer trust” by representing that the milk and cream were sourced from cows on Vermont dairies that participate in its “Caring Dairy” program. Ehlers said less than half the milk and cream actually came from “happy cows,” with the rest coming from “factory-style, mass-production” dairy operations. He said the deception enabled Ben...