More enterprise managers and investors are pointing to the UN’s Sustainable Development Goals as their guideposts for the good they want to do in the world. And sustainable investing assets now account for $17 trillion, or about 33% of all professionally managed assets in the US. Globally, the figure is likely to be an even higher percentage, given the longer history of sustainable investing in Europe. But it’s also clear that there’s a big gap between the walk and the talk. There’s no one concrete definition for what a “sustainable” investing strategy entails. Environmental, Social and Governance, or ESG, reporting,…