The meat and dairy industries bombard Americans daily with aggressive, often-misleading messaging to convince people to consume more animal foods – a tactic discussed at length in Meatonomics. Now, in a refreshing counterpunch, advocacy group Animal Protection & Rescue League (APRL) has launched two “GO VEGAN” billboards next to a busy freeway in Los Angeles. It’s not cheap to design, create and run them – $13,500 for the first month, to be exact, but the economics make sense.

Together, the billboards are getting two million impressions per week – or eight million impressions over their four-week run. That’s about $0.002 per impression, or less than 1/35^th the cost of vegan literature (which runs $60 per 1,000 fliers). While a flier in hand might provide a more detailed message than a “GO VEGAN” slogan glimpsed in passing, advertising lore says a message must reach a viewer nine times before…