This episode of The Dig is brought to you by our listeners who support us at patreon.com. On Drilled's new miniseries, Herb, host Amy Westervelt tells the story of a mobile VP who got the oil guys into the corporate free speech business back in the 1970s. We also look at how herbs work influenced all this nefarious feel-good messaging from oil companies today and explores mobile's role in setting the legal foundation for the expansion of corporate free speech.