If you’ve heard of the phrase “carbon footprint” chances are, you’ve heard of Greta Thunberg. The impassioned 16-year-old climate activist is now the subject of countless news articles, angry tweets, and not surprisingly, a whole host of uncharitable memes. A polarizing force, you either love her for her devoted climate fervor or you hate her for the public spanking that she unleashed on world leaders for not taking the impending climate doom seriously enough. She has shamed politicians and individuals and has unapologetically called on the world to panic along with her. But does Greta really buy what she’s selling?...