Coming up with just one ESG standard?

While investors are increasingly clamoring for more ESG information as they pour money into ESG investments, there remains no one standard for defining just what ESG is.  Blackrock, with $7.8 trillion in assets, is seeking to address this by getting the market to move to just one standard, one which would be recognized around the world.  Landing on a single approach would go a long way to minimizing risks for reporting meaningful, accurate and consistent information; hopefully this would reduce the burden, too.  Until then, there remains concern and a high level of risk about matching what is said about investment approaches to what is actually being implemented.