Low cost, indexed exchange traded funds (ETFs) are improving access to what many investors are asking for — sustainable investing strategies that integrate the analysis of environmental, social, and governance (ESG) factors into the investment process and portfolio. Historically, ESG funds have had higher expenses due to the extra research that managers need to conduct on companies. However, as more money flows into ESG strategies, the companies that create ESG indexes are able to lower fees. A growing awareness of the benefits of ESG investment factors is also adding to investor demand.