Today's Close-Up S2017E31 - Ethical Investing: A Rising Tide

A rising number of investors are focusing on firms that meet ESG criteria - and they're changing the way business is done. ESG stands for "environmental", "social" and "governance", and if companies are careless about these factors, they might not raise enough money from the markets. We ask experts what this investment trend is about, and look at some businesses trying to keep up with the standards.