It was described at length in "Asset Price Bubbles and Monetary Policy," an article published by the ECB last year. I quote from the article: "This approach amounts to a cautious policy of 'leaning against the wind' of an incipient bubble.
There is also appetite, as I have mentioned, to use your investment muscle to do good – to help defend the planet against the ravages of climate change and environmental damage. These two impulses come neatly together when we seek to make Nairobi the global hub for green finance. What must we do, then? What is my challenge to you?