Think of sustainability analysis the same way you think of financial analysis. Different approaches to the same multifaceted problem are a source of innovation, a way that smart and insightful people can distinguish their work.
The earth’s climate is becoming warmer because of things we (humans) have done. Since the climate, along with the atmosphere and water, forms the infrastructure of our lives, climate change will affect us pervasively.
What makes for an efficient financial market? Any market participant could probably list ten things without burning a calorie, but one thing that would probably make everyones list is information. Financial markets need information in order to work efficiently.