In part one of our series on GreenledgersESG investing yesterday, a former sustainable investor came down pretty hard on the concept. He articulated some of the most compelling arguments against ESG: it's challenging for money managers to actually consider the social impact of their investments without betraying their duty to maximize profits for their clients, and companies will inevitably care much more about the reputational benefits they get from promoting ESG than the true impact of actually practicing it

In today's episode, we hear from two voices on the other side of the debate. 15 years ago, ESG was in its Wild West era. Almost no companies released data on the social or environmental impact of their operations, or even bothered to keep track in the first place. ESG investing jobs just didn't exist. And since then ... it seems like things have gotten better? Data shows that many ESG-focused portfolios outperform traditional investments. Social impact has become a much higher corporate priority. Yes, ESG might not be perfect — but should it be here to stay?

Music by Drop Electric. Find us: Twitter / Facebook / Newsletter.

Subscribe to our show on Apple Podcasts, Spotify, PocketCasts and NPR One.

For sponsor-free episodes of The Indicator from Planet Money, subscribe to Planet Money+ via Apple Podcasts or at plus.npr.org.